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[ARCHIVED THREAD] - Adams Arms XLP Piston System (Page 2 of 4)

Posted: 4/23/2014 1:00:31 AM EDT

[#1]

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Quoted:
If the XLP block is installed correctly there should be no issues with it shooting loose. however to provide people with options the XLP block has a flat built into the side that it can be drilled and pinned. this also allows people to pin their own blocks without voiding the lifetime warranty.

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I'm an Aggie. So if I bugger up drilling your gas block w/ my Dremel you'll take it back & send me a new one? I'm seeing an educational opportunity here...

Posted: 4/23/2014 6:54:52 AM EDT

[#2]

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Quoted:

AA, I think you keep either skirting (or are unaware of) a serious issue. It's not JUST the barrel nut length, it's ALSO the SHAPE of the barrel nut. The AA system requires a mil spec STYLE barrel nut WHICH HAS TEETH on it. The teeth are required to support the lower AND partial sides of the spring cup. Without those teeth, the cup will only be supported on the extreme lower edge and this will result in accelerated wear on the rod or potential failure of spring cup. Please STOP saying it just requires a mil spec LENGTH barrel nut. That is misleading.

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Quoted:

Quoted:
I don't know the dimensions of the KMR barrel nut, but like TK mentioned if it is not much longer you should be fine. as far as where the bushing rests, as long as a large enough portion of the bushing is resting against the barrel nut to prevent the bushing from sliding over it, you should be good to go.

AA, I think you keep either skirting (or are unaware of) a serious issue. It's not JUST the barrel nut length, it's ALSO the SHAPE of the barrel nut. The AA system requires a mil spec STYLE barrel nut WHICH HAS TEETH on it. The teeth are required to support the lower AND partial sides of the spring cup. Without those teeth, the cup will only be supported on the extreme lower edge and this will result in accelerated wear on the rod or potential failure of spring cup. Please STOP saying it just requires a mil spec LENGTH barrel nut. That is misleading.

Actually, it will work on barrel nuts without teeth that only support the bottom of the drive rod bushing. I have personally build several Adams Arms uppers with rails that require proprietary barrel nuts, that only support the bottom of the bushing, and they are all running just fine. And if it does cause the drive rod to eventually fail, it will be covered under it's warranty.

Posted: 4/23/2014 7:02:03 AM EDT

[#3]

Quote History

Quoted:

I'm an Aggie. So if I bugger up drilling your gas block w/ my Dremel you'll take it back & send me a new one? I'm seeing an educational opportunity here...

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Quoted:

Quoted:
If the XLP block is installed correctly there should be no issues with it shooting loose. however to provide people with options the XLP block has a flat built into the side that it can be drilled and pinned. this also allows people to pin their own blocks without voiding the lifetime warranty.

I'm an Aggie. So if I bugger up drilling your gas block w/ my Dremel you'll take it back & send me a new one? I'm seeing an educational opportunity here...

As a representative of Adams Arms, i'm not sure if i'm allowed to respond to this with sarcasm. so instead i'll say that the warranty does not cover customer error. if you correctly drill and pin your gas block, and it then suffers some functional issue, it will be covered because you have not modified the product in an unintended manner. if you try to drill and pin your gas block and do a terrible job, we will be glad to sell you a new one to try again, ad infinitum

Posted: 4/23/2014 12:39:58 PM EDT

[#4]

Quote History

Quoted:

As a representative of Adams Arms, i'm not sure if i'm allowed to respond to this with sarcasm. so instead i'll say that the warranty does not cover customer error. if you correctly drill and pin your gas block, and it then suffers some functional issue, it will be covered because you have not modified the product in an unintended manner. if you try to drill and pin your gas block and do a terrible job, we will be glad to sell you a new one to try again, ad infinitum

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Quoted:

Quoted: I'm an Aggie. So if I bugger up drilling your gas block w/ my Dremel you'll take it back & send me a new one? I'm seeing an educational opportunity here...

As a representative of Adams Arms, i'm not sure if i'm allowed to respond to this with sarcasm. so instead i'll say that the warranty does not cover customer error. if you correctly drill and pin your gas block, and it then suffers some functional issue, it will be covered because you have not modified the product in an unintended manner. if you try to drill and pin your gas block and do a terrible job, we will be glad to sell you a new one to try again, ad infinitum

Ok, that's fair enough. Still can't afford to learn how to use the Dremel drill press.

Posted: 4/23/2014 12:57:48 PM EDT

[#5]

I am currently working on putting together a set of instructions, recommended specifications, and equipment for those who want to pin their own block. or who want to have a local gunsmith or armorer do it for them.

Posted: 4/23/2014 12:59:43 PM EDT

[#6]

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Quoted:

Ok, that's fair enough. Still can't afford to learn how to use the Dremel drill press.

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Quoted:

Quoted: I'm an Aggie. So if I bugger up drilling your gas block w/ my Dremel you'll take it back & send me a new one? I'm seeing an educational opportunity here...

As a representative of Adams Arms, i'm not sure if i'm allowed to respond to this with sarcasm. so instead i'll say that the warranty does not cover customer error. if you correctly drill and pin your gas block, and it then suffers some functional issue, it will be covered because you have not modified the product in an unintended manner. if you try to drill and pin your gas block and do a terrible job, we will be glad to sell you a new one to try again, ad infinitum

Ok, that's fair enough. Still can't afford to learn how to use the Dremel drill press.

As a side note, if you already have a dremel press, get your self some scrap steel and practice replicating the process on material that you don't care about. cheap practice is best practice when it comes to that sort of trial and error.

Posted: 4/23/2014 11:56:50 PM EDT

[#7]

Quote History

Quoted:

Actually, it will work on barrel nuts without teeth that only support the bottom of the drive rod bushing. I have personally build several Adams Arms uppers with rails that require proprietary barrel nuts, that only support the bottom of the bushing, and they are all running just fine. And if it does cause the drive rod to eventually fail, it will be covered under it's warranty.

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Quoted:

Quoted:
I don't know the dimensions of the KMR barrel nut, but like TK mentioned if it is not much longer you should be fine. as far as where the bushing rests, as long as a large enough portion of the bushing is resting against the barrel nut to prevent the bushing from sliding over it, you should be good to go.

AA, I think you keep either skirting (or are unaware of) a serious issue. It's not JUST the barrel nut length, it's ALSO the SHAPE of the barrel nut. The AA system requires a mil spec STYLE barrel nut WHICH HAS TEETH on it. The teeth are required to support the lower AND partial sides of the spring cup. Without those teeth, the cup will only be supported on the extreme lower edge and this will result in accelerated wear on the rod or potential failure of spring cup. Please STOP saying it just requires a mil spec LENGTH barrel nut. That is misleading.

Actually, it will work on barrel nuts without teeth that only support the bottom of the drive rod bushing. I have personally build several Adams Arms uppers with rails that require proprietary barrel nuts, that only support the bottom of the bushing, and they are all running just fine. And if it does cause the drive rod to eventually fail, it will be covered under it's warranty.

Cool. Thanks for that info. I thought, before, you guys said your systems needed that extra support. But if you guys give the green light (warranty wise) to use non-teeth barrel nuts, then that's good enough for me! Thanks again.

Posted: 4/24/2014 3:36:18 AM EDT

[#8]

My kit will be here friday. I have a daniel defense MK18 that I was planning to put it on. And another daniel defense 12" lite rail II tat I could put it on if it wont work on the MK18.

I was told by the rep that if it clears the hand guard, it will work. He didnt say anything about the barrel nut!?!?! I just took it all apart and the barrel nut measures .7 Will it work?

This system is advertised to fit under most MAJOR rail systems. Why are we just now finding out it wont?

Posted: 4/25/2014 5:43:32 AM EDT

[#9]

Quote History

Quoted:
-Determining hangurad/ rail fitment

The barrel nut fitment is a oal (overall length) factor the operating rod, bushing and spring require a barrel nut of similar Length to GI or 0.85" oal. ( measured front to rear from normal operator position in place)
You should be able to check with the various manufacturers of the hand guards your interested in or currently use and get the length of their attachment nut to determine if it will work for you.

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Small question please - will this works in case of SHORTER length of barrel nut? 0.75" will be ok? Or do I need to add custom 0.1" bushing to get 0.85" total? Thanks!

Posted: 4/25/2014 8:28:42 AM EDT

[#10]

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Quoted:

Small question please - will this works in case of SHORTER length of barrel nut? 0.75" will be ok? Or do I need to add custom 0.1" bushing to get 0.85" total? Thanks!

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Quoted:

Quoted:
-Determining hangurad/ rail fitment

The barrel nut fitment is a oal (overall length) factor the operating rod, bushing and spring require a barrel nut of similar Length to GI or 0.85" oal. ( measured front to rear from normal operator position in place)
You should be able to check with the various manufacturers of the hand guards your interested in or currently use and get the length of their attachment nut to determine if it will work for you.

Small question please - will this works in case of SHORTER length of barrel nut? 0.75" will be ok? Or do I need to add custom 0.1" bushing to get 0.85" total? Thanks!

the key here is going to be whether or not the bushing is resting against the barrel nut when the plug and drive rod are in place. if the bushing is not resting on the barrel nut, then when the gun cycles the nut and the bushing will slam together and things will start breaking (barrel nut, bushing, drive rod) . however you can easily avoid this by adding an appropriate size washer or other spacing device so that the bushing rests on the nut. hope that answers your question. who's next? lets see if i can use the word "nut" more times in the next answer.

Posted: 4/25/2014 9:15:30 AM EDT

[#11]

Thank you for the explanation! Just I slightly worried because of this article
http://www.calguns.net/calgunforum/showthread.php?t=757047&styleid=6&styleid=6
Looks there are a lot of quite precision adjustments need to be done sometimes...

Posted: 4/27/2014 11:23:49 PM EDT

[#12]

Will it fit Daniel Defense 12.0 MFR as found on the midlength DDM4v7?

Posted: 4/29/2014 1:06:55 AM EDT

[#13]

How much adjustability does the XLP gas block have, 4settings, 5, 6, 7, ???

Posted: 5/1/2014 8:47:26 AM EDT

[#14]

five

Posted: 5/1/2014 11:43:38 PM EDT

[#15]

My prior AA system will work with low powered steel cased .223 to xm193 so I'm not sure why people are obsessed with the "more settings" thing?

Posted: 5/2/2014 1:52:52 AM EDT

[#16]

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Quoted:
My prior AA system will work with low powered steel cased .223 to xm193 so I'm not sure why people are obsessed with the "more settings" thing?

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If it doesn't go up to 11, you can make improvements. If the competition has 6 adjustments, that's more than yours.

Think razor blades. You can now buy razor cartridges w/ 6 blades. Why 6? B/c the other guys have 5.

Posted: 5/3/2014 12:40:11 AM EDT

[#17]

Quote History

Quoted:

If it doesn't go up to 11, you can make improvements. If the competition has 6 adjustments, that's more than yours.

Think razor blades. You can now buy razor cartridges w/ 6 blades. Why 6? B/c the other guys have 5.

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Quoted:

Quoted:
My prior AA system will work with low powered steel cased .223 to xm193 so I'm not sure why people are obsessed with the "more settings" thing?

If it doesn't go up to 11, you can make improvements. If the competition has 6 adjustments, that's more than yours.

Think razor blades. You can now buy razor cartridges w/ 6 blades. Why 6? B/c the other guys have 5.

Haha! Well done sir :-)

Posted: 5/3/2014 2:44:48 AM EDT

[#18]

Any idea if the xlp will work with the Midwest industries SSK rail?

Posted: 5/5/2014 12:00:24 AM EDT

[#19]

Since my question was blown off, I will post the results here.

I received my XLP kit a week ago friday. I didnt get to shoot it until this weekend. Its short stroking. I have it installed on a 10.3" Daniel Defense MK18. The rep from Adams arms assured me it would work with my rifle. Said the kit was designed to work with any major rail on the market.

The first problem I am having is that the piston kit fits VERY snug.

Second, there is 6 settings on the piston. The rail only allows me to set it on setting 5 of 6. If the lever to adjust the pressure was .100 to .150 thinner, it would probably clear with room to spare.

Its not right that the customer should be the guinea pig. The MK18 is a MAJOR rail. They should have had one on hand to test this kit on.

As you can see, the Daniel defense MK18 rail will only allow me to set the piston to setting #5 of 6

Pulling the gas block through the rear of the rail. The piston is still installed on the gun at this point. You can see how tight of a fit there is with the gas block and the inside of the rail.

Rail completely off

Posted: 5/5/2014 12:46:02 PM EDT

[#20]

Quote History

Quoted:
Since my question was blown off, I will post the results here.

I received my XLP kit a week ago friday. I didnt get to shoot it until this weekend. Its short stroking. I have it installed on a 10.3" Daniel Defense MK18. The rep from Adams arms assured me it would work with my rifle. Said the kit was designed to work with any major rail on the market.

The first problem I am having is that the piston kit fits VERY snug.

Second, there is 6 settings on the piston. The rail only allows me to set it on setting 5 of 6. If the lever to adjust the pressure was .100 to .150 thinner, it would probably clear with room to spare.

Its not right that the customer should be the guinea pig. The MK18 is a MAJOR rail. They should have had one on hand to test this kit on.

http://i58.tinypic.com/2celqmx.jpg

http://i57.tinypic.com/255rh2x.jpg

As you can see, the Daniel defense MK18 rail will only allow me to set the piston to setting #5 of 6

http://i59.tinypic.com/2pyz32h.jpg

http://i59.tinypic.com/2w50v0y.jpg

http://i59.tinypic.com/13yl9mu.jpg
Pulling the gas block through the rear of the rail. The piston is still installed on the gun at this point. You can see how tight of a fit there is with the gas block and the inside of the rail.

http://i62.tinypic.com/2mdmpsk.jpg
Rail completely off

View Quote

Bummer.

. Do you think filing/thinning the interfering side of the adjuster might make it work? Drop in should be drop in but the system looks cool enough to make a little fitting worth the headache.

Short stroking at position 5? Having 6 positions would allow the gas port hole to be opened slightly for greater adjust-ability. May just need to break in though. Steel cased ammo? -- light buffer/lose a coil(1,2,3...) on your buffer spring.

Did you notice any rubbing during your not so pleasant shooting. It does look tight in there and if it rubs during firing it can hurt accuracy enough to cause angriness

Posted: 5/5/2014 5:06:02 PM EDT

[#21]

Quote History

Quoted:

Bummer.

. Do you think filing/thinning the interfering side of the adjuster might make it work? Drop in should be drop in but the system looks cool enough to make a little fitting worth the headache.

Short stroking at position 5? Having 6 positions would allow the gas port hole to be opened slightly for greater adjust-ability. May just need to break in though. Steel cased ammo? -- light buffer/lose a coil(1,2,3...) on your buffer spring.

Did you notice any rubbing during your not so pleasant shooting. It does look tight in there and if it rubs during firing it can hurt accuracy enough to cause angriness

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Quote History

Quoted:

Quoted:
Since my question was blown off, I will post the results here.

I received my XLP kit a week ago friday. I didnt get to shoot it until this weekend. Its short stroking. I have it installed on a 10.3" Daniel Defense MK18. The rep from Adams arms assured me it would work with my rifle. Said the kit was designed to work with any major rail on the market.

The first problem I am having is that the piston kit fits VERY snug.

Second, there is 6 settings on the piston. The rail only allows me to set it on setting 5 of 6. If the lever to adjust the pressure was .100 to .150 thinner, it would probably clear with room to spare.

Its not right that the customer should be the guinea pig. The MK18 is a MAJOR rail. They should have had one on hand to test this kit on.

http://i58.tinypic.com/2celqmx.jpg

http://i57.tinypic.com/255rh2x.jpg

As you can see, the Daniel defense MK18 rail will only allow me to set the piston to setting #5 of 6

http://i59.tinypic.com/2pyz32h.jpg

http://i59.tinypic.com/2w50v0y.jpg

http://i59.tinypic.com/13yl9mu.jpg
Pulling the gas block through the rear of the rail. The piston is still installed on the gun at this point. You can see how tight of a fit there is with the gas block and the inside of the rail.

http://i62.tinypic.com/2mdmpsk.jpg
Rail completely off

Bummer.

. Do you think filing/thinning the interfering side of the adjuster might make it work? Drop in should be drop in but the system looks cool enough to make a little fitting worth the headache.

Short stroking at position 5? Having 6 positions would allow the gas port hole to be opened slightly for greater adjust-ability. May just need to break in though. Steel cased ammo? -- light buffer/lose a coil(1,2,3...) on your buffer spring.

Did you notice any rubbing during your not so pleasant shooting. It does look tight in there and if it rubs during firing it can hurt accuracy enough to cause angriness

After I posted I got my calipers out and measured the lever. It needs .065 taken off for it to be flush with the gas block. on setting 6.

As you can see, on setting 6, the lever is sticking out on the side. When the gas block is fitting snug in the rail, this wont allow you to put the kit on setting 6.

Adams Arms, Listen up. This lever should be flush with the gas block when on high setting!!!!! A rough measurement shows you will only need to take off .070 Maybe take off .100 to be on the safe side. I dont understand why the engineers didnt come up with this. Why do the customres have to engineer your products?? As mentioned. A drop in rail, should be a drop in rail. Especially with a major rail.

I will be leaving here shortly to go to a friends property to try shooting it again. This time with the rail off. I will give an update later tonight.

Posted: 5/5/2014 9:45:23 PM EDT

[#22]

As for the adjustment knob clearance protrusion... I'm stumped as to why it's made that way

But as for the "short stroking"... they are notorious for that on a new build. They require the cam pin to wear into the upper a tad for it to function smoothly. About 100+ rounds seems to be the "normal" for the system (then smooth sailing after that). Mine short stroked for about the first 150-200 rounds but now it feeds/fires/ejects any 223/5.56 I throw in it (although still not sure about Silver Bear, it was my worst offender, and I've since stopped purchasing that low powered junk).
I'm impressed with AA's systems once their broken in. Hoping yours works out as well. Keep us posted on the lever fix!

Posted: 5/5/2014 10:37:11 PM EDT

[#23]

Quote History

Quoted:
As for the adjustment knob clearance protrusion... I'm stumped as to why it's made that way

But as for the "short stroking"... they are notorious for that on a new build. They require the cam pin to wear into the upper a tad for it to function smoothly. About 100+ rounds seems to be the "normal" for the system (then smooth sailing after that). Mine short stroked for about the first 150-200 rounds but now it feeds/fires/ejects any 223/5.56 I throw in it (although still not sure about Silver Bear, it was my worst offender, and I've since stopped purchasing that low powered junk).
I'm impressed with AA's systems once their broken in. Hoping yours works out as well. Keep us posted on the lever fix!

View Quote

The rifle is a couple years old. When I first built it, it was over gassed. One thing I did that fixed it was putting a H3 buffer in it. I put a different buffer in it today. It was either a H1 or H2. Either way it was lighter. And the gun functioned perfect with the rail off. I tried position 5 and 6 and it worked fine. I was also using wolf ammo. I didnt have any brass loaded up.

Im getting ready to go down and put that pressure switch in a vice and take a dremel to it. I love this system. I want one for my 5.45x39 rifle. But it really pisses me off that the engineers at Adams didnt catch this. The customers shouldnt be pointing out design flaws.

Posted: 5/6/2014 3:11:38 PM EDT

[#24]

Quote History

Quoted:

Since my question was blown off, I will post the results here.

I received my XLP kit a week ago friday. I didnt get to shoot it until this weekend. Its short stroking. I have it installed on a 10.3" Daniel Defense MK18. The rep from Adams arms assured me it would work with my rifle. Said the kit was designed to work with any major rail on the market.

The first problem I am having is that the piston kit fits VERY snug.

Second, there is 6 settings on the piston. The rail only allows me to set it on setting 5 of 6. If the lever to adjust the pressure was .100 to .150 thinner, it would probably clear with room to spare.

Its not right that the customer should be the guinea pig. The MK18 is a MAJOR rail. They should have had one on hand to test this kit on.
http://i58.tinypic.com/2celqmx.jpg

http://i57.tinypic.com/255rh2x.jpg

As you can see, the Daniel defense MK18 rail will only allow me to set the piston to setting #5 of 6

http://i59.tinypic.com/2pyz32h.jpg

http://i59.tinypic.com/2w50v0y.jpg

http://i59.tinypic.com/13yl9mu.jpg

Pulling the gas block through the rear of the rail. The piston is still installed on the gun at this point. You can see how tight of a fit there is with the gas block and the inside of the rail.

http://i62.tinypic.com/2mdmpsk.jpg

Rail completely off

View Quote

Take the gas block off and open up the gas port a little.

Posted: 5/6/2014 4:38:32 PM EDT

[#25]

Quote History

Quoted:

Take the gas block off and open up the gas port a little.

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Quote History

Quoted:

Quoted:
Since my question was blown off, I will post the results here.

I received my XLP kit a week ago friday. I didnt get to shoot it until this weekend. Its short stroking. I have it installed on a 10.3" Daniel Defense MK18. The rep from Adams arms assured me it would work with my rifle. Said the kit was designed to work with any major rail on the market.

The first problem I am having is that the piston kit fits VERY snug.

Second, there is 6 settings on the piston. The rail only allows me to set it on setting 5 of 6. If the lever to adjust the pressure was .100 to .150 thinner, it would probably clear with room to spare.

Its not right that the customer should be the guinea pig. The MK18 is a MAJOR rail. They should have had one on hand to test this kit on.

http://i58.tinypic.com/2celqmx.jpg

http://i57.tinypic.com/255rh2x.jpg
As you can see, the Daniel defense MK18 rail will only allow me to set the piston to setting #5 of 6

http://i59.tinypic.com/2pyz32h.jpg

http://i59.tinypic.com/2w50v0y.jpg

http://i59.tinypic.com/13yl9mu.jpg
Pulling the gas block through the rear of the rail. The piston is still installed on the gun at this point. You can see how tight of a fit there is with the gas block and the inside of the rail.

http://i62.tinypic.com/2mdmpsk.jpg
Rail completely off

Take the gas block off and open up the gas port a little.

See the post above. The rlfle is working fine with a lighter buffer.

Posted: 5/7/2014 12:12:38 AM EDT

[#26]

Walker77,

One of the claims Adams Arms made was that the XLP system eliminates the flash signature. This was one of the features that had me interested especially for shorter barrels. Have you noticed any reduction with your 10.3" barrel?

Posted: 5/7/2014 10:33:32 AM EDT

[#27]

Quote History

Quoted:
Walker77,

One of the claims Adams Arms made was that the XLP system eliminates the flash signature. This was one of the features that had me interested especially for shorter barrels. Have you noticed any reduction with your 10.3" barrel?

View Quote

Sorry, I cant help you on that. When I shot it the other day, everything was stripped off the barrel, rail and the flash hider.

Posted: 5/8/2014 2:54:07 AM EDT

[#28]

I just got my mid length XLP today for my "middy recce pisety sidey-cocky medcony" build. There are 5 detents. There is a video out from Shot Show claiming "8 positions". Not sure if it is 5 or 6 (past the last detend in the "-" direction where it rotates freely) position?

I notice the block is very long and has 3 set screws as opposed to the usual 2. Does anyone know if the adjustment knob would stick out past the end of an 11" handguard? I can throw the 9" Evolution I currently have on my 10.5" 300BLK nd measure if there are 2 more inches available.

Update: using my breath, I found that the 5 positions range from fully open to closed. the other numbers were probably prototypes.

Mike

Posted: 5/8/2014 2:16:39 PM EDT

[#29]

Quote History

Quoted:
Update: using my breath, I found that the 5 positions range from fully open to closed. the other numbers were probably prototypes.

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Not exactly. The other 5 positions are for suppressors. Companies typically dont put settings there for the hell of it.

Posted: 5/8/2014 2:19:04 PM EDT

[#30]

Its also nice to see that Adams Arms is no longer commenting in their thread. THANKS!

I have also emailed them for support (before I fixed it) and they have yet to email me back. Looks like I will be taking my business somewhere else in the future.

Posted: 5/8/2014 4:50:11 PM EDT

[#31]

Quote History

Quoted:

Not exactly. The other 5 positions are for suppressors. Companies typically dont put settings there for the hell of it.

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Quoted:

Quoted:
Update: using my breath, I found that the 5 positions range from fully open to closed. the other numbers were probably prototypes.

Not exactly. The other 5 positions are for suppressors. Companies typically dont put settings there for the hell of it.

I don't think you understood what I was saying. There are 5 positions on the unit I received. Some pre-production demos appear to have had 8 positions. There is only one set of positions.

Mike

Posted: 5/8/2014 4:53:45 PM EDT

[#32]

Quote History

Quoted:
I just got my mid length XLP today for my "middy recce pisety sidey-cocky medcony" build. There are 5 detents. There is a video out from Shot Show claiming "8 positions". Not sure if it is 5 or 6 (past the last detend in the "-" direction where it rotates freely) position?

I notice the block is very long and has 3 set screws as opposed to the usual 2. Does anyone know if the adjustment knob would stick out past the end of an 11" handguard? I can throw the 9" Evolution I currently have on my 10.5" 300BLK nd measure if there are 2 more inches available.

Update: using my breath, I found that the 5 positions range from fully open to closed. the other numbers were probably prototypes.

Mike

View Quote

Their video stated 8 settings, in their product description page they say multi, you have to hunt for the true numbers by going to their blog page where they say 5 adjustable settings, so its 5 settings if their blog page on their website is correct.

Posted: 5/8/2014 8:02:21 PM EDT

[#33]

5 is still better than 3. I'm getting my bolt modified by American Spirit Monday.

Mike

Posted: 5/8/2014 8:03:29 PM EDT

[#34]

Quote History

Quoted:
5 is still better than 3. I'm getting my bolt modified by American Spirit Monday.

Mike

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How? and Why?

Posted: 5/10/2014 4:13:46 PM EDT

[#35]

They mill a short slot in the left side of the carrier just behind the bolt engage non-reciprocating side charging mechanism.

Mike

Posted: 5/13/2014 11:06:08 AM EDT

[#36]

I got my upper mostly built last night. I need to get a rail. I verified that the adjustment knob will stick out past an 11" handguard (with a tiny bit to spare) so it'll be a stubby Recce (since 12" rifle length handguards are part of the Recce definition).

The area where American Spirit Arms puts their side charger notch is scalloped out on the new Low Mass carrier. They had to built it up with stainless TIG material before machining, which they did in their shop while I waited. They did a really nice job. Their cold blue did not take on the stainless but I will try something a bit stronger and if that does not work a little high temp brake caliper paint should do it. Since the notch voids the warranty I was not worried about "Double Secret" void warranty :)

The Sampson rail's anti-rotation tabs will need to be modified slightly. I've done this before for a Sun Devil billet upper but the American Spirit is even beefier. A.S.A. has their own signature line of Sampson rails but they are not on the KeyMod version yet. The very latest version of the Sampson Evolution has an anti-rotation set screw on the bottom so I'm not too worried even if I have to remove them completely.

Only one glitch: Magpul BAD lever is no go (width because it is billet and height because it is a side charger). I am looking at this unit and have sent both companies an email: http://phase5wsi.com/extended-bolt-release-v2-sc.html

Mike

PS. Got a reply back form Brandi at A.S.A. within minutes. The Phase 5 Weapon Systems unit works.

Posted: 5/13/2014 2:26:28 PM EDT

[#37]

personally a big fan of the phase5 v2 over the magpul lever. it is considerably less clunky.

also that stainless will take bluing much better if you heat it up some.

Posted: 5/13/2014 3:52:17 PM EDT

[#38]

Wow, we actually hear back from adams. They completely blow off all the questions and problems asked in this thread. Instead they comment on their choice of accessories.

Posted: 5/13/2014 5:09:54 PM EDT

[#39]

AA, Because 9mm mags have weaker springs than 5.56mm mags, I have found that the added weight of the Magpul makes the LRHO marginal on my 9mm upper. The Phase 5 should help with that too.

I'll try some heat.

Walker 77, I have found Adams Arms very responsive to e-mail. You should probably e-mail your questions to them instead of hoping they see them on a forum.

Mike

Posted: 5/13/2014 7:47:45 PM EDT

[#40]

No, this is their post. They should address these issues.

Posted: 5/14/2014 7:46:22 AM EDT

[#41]

Quote History

Quoted:
No, this is their post. They should address these issues.

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I am not entirely sure what you want addressed, i check on the threads as often as i can, but if there is something i am missing i would be glad to answer that question to the best of my ability.

Posted: 5/14/2014 7:34:35 PM EDT

[#42]

No venting to atmospheric pressure

and thus no flash or supersonic crack

Can you elaborate

Posted: 5/14/2014 10:08:37 PM EDT

[#43]

yes I too am interested to know more about the flash "elimination" abilities of the system. Does it completely remove the flash signature as stated by the use of word eliminate in the advertising of XLP? Or does it reduce flash signature? Could I use this system with a 7.5in barrel without any muzzle device and not see any flash?

Posted: 5/15/2014 3:52:46 PM EDT

[#44]

Does the XLP system also use 90 in-lb of torque on the gas block screws like the older versions or is it different?

Mike

Posted: 5/15/2014 4:49:10 PM EDT

[#45]

Quote History

Quoted:

I am not entirely sure what you want addressed, i check on the threads as often as i can, but if there is something i am missing i would be glad to answer that question to the best of my ability.

View Quote View All Quotes

View All Quotes

Quote History

Quoted:

Quoted:
No, this is their post. They should address these issues.

I am not entirely sure what you want addressed, i check on the threads as often as i can, but if there is something i am missing i would be glad to answer that question to the best of my ability.

It would have been nice to have a little help when my system wasnt working when I first got it. And I shouldnt need to go down to a H1 buffer to make a 10.3" rifle to work. Especially one that was over gassed when it was first built.

Posted: 5/15/2014 4:54:56 PM EDT

[#46]

Quote History

Quoted: It would have been nice to have a little help when my system wasnt working when I first got it. And I shouldnt need to go down to a H1 buffer to make a 10.3" rifle to work. Especially one that was over gassed when it was first built.

View Quote

Que? You've completely changed the operating system of your rifle, and you're upset you had to change buffers?

Posted: 5/17/2014 7:57:09 PM EDT

[#47]

I put the Daniel Defense MK18 rail back on the gun and took it out and shot it this morning. Its back to acting up again. I only fired about 10 rounds and got fed up with it and went back to shooting other guns. It ejected all the brass, but it didnt pick up a fresh round. I was using hornady TAP. I had to cycle it by hand to get it to chamber a round.

It was working perfect with the rail off, and it malfunctions with the rail on. What is your solution Adams Arms???

I have emailed tech. support and never got a response from them either.

Posted: 5/19/2014 9:48:05 AM EDT

[#48]

As far as the Adams Arms System eliminating the supersonic crack, the reasoning is because of the 180 degree turn that the gasses make when the enter and leave the piston cup. That 180 degree turn slows the gasses to less than super sonic as so eliminate the "flash" that often disrupts Night Vision. This is not referring to the actual muzzle flash.

Cody
Adams Arms
Customer Service