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Posted: 7/16/2014 1:09:16 PM EDT
[#1]
the questions above have been answered in other threads, multiple times http://www.ar15.com/forums/t_3_126/649481_AA_XLP_and_compatible_and_incompatible_handguards.html
and emails. but for the sake of everyone here. XLP works with the rev rail with no modification. for troy rails the bottom of the rail needs to be modified to allow the set screws to be tightened through the rail. because the rail needs to be rotated, the install is accomplished by installing and gaping the gas block, marking your spot on the barrel, removing the block, installing the rail, and then installing your block. for the Midwest SSK, Midwest recommends cutting back the spring. a Midwest barrel nut is a reversed, slightly elongated standard barrel nut. the bushing does not need to rest against the teeth of the SSK nut, it needs to rest against the outward facing flat edge. the barrel nut can simply be cut back in the one spot where the bushing rests. you do not need to cut it back all the way to the teeth. XLP is .999 +/- tall from center bore XLP is .565 +/- to the bottom from center bore XLP is .97 +/- wide at its widest as always our system is designed to work with a standard barrel nut, or barrel nut of similar length. the bushing rests against the barrel nut about .85 from the receiver. if if a proprietary barrel nut is shorter than this, a shim or longer spring needs to be used so that the bushing does not slam into the barrel nut. if the barrel nut is longer than this, the barrel nut need to be cut back in the area that the bushing rests against so that the bushing rests around .85 so that the drive rod has a complete stroke. |
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Posted: 7/17/2014 11:08:28 AM EDT
[#2]
So it was a blatant lie when you advertised that the XLP system will work with most major rails on the market. Its a complete lie when you have to modify 95% of the rails in your last statement.
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Posted: 7/17/2014 7:33:02 PM EDT
[#3]
Quote HistoryQuoted:
So it was a blatant lie when you advertised that the XLP system will work with most major rails on the market. Its a complete lie when you have to modify 95% of the rails in your last statement. I would like to see some better CS from Adams Arms. I've been with a back and forth email for more than a month with them, it take about a week on average to get a reply from them each time. On top of that, they hardly post here in this thread anymore. |
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Posted: 7/19/2014 12:58:20 AM EDT
[#4]
AA owes me 30 minutes of my time. I went slow to make sure it worked. I did not like the idea of cutting a barrel nut, so a $10 bushing is better to play with. Took 100 rounds to break in, but run smooth now. AA send me a shirt? :)
http://s103.photobucket.com/user/mrclean91/media/20140630_214537_zps8d4a71f3.jpg.html?sort=3&o=5 |
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Posted: 7/19/2014 7:46:17 PM EDT
[#5]
This system makes the DI vs Piston system an easy call. Why would anyone waist there time with an operating system that is obviously not worth trusting your life on? I guess for a toy gun to tinker with makes sense as it's easier to clean, but I want to be sure mine all go bang everytime without any tinkering. One that note, this one isn't even easy to clean, as you have to remove the whole handguard.
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Posted: 7/19/2014 11:04:23 PM EDT
[#6]
Quote HistoryQuoted:
AA owes me 30 minutes of my time. I went slow to make sure it worked. I did not like the idea of cutting a barrel nut, so a $10 bushing is better to play with. Took 100 rounds to break in, but run smooth now. AA send me a shirt? :) <a href="http://s103.photobucket.com/user/mrclean91/media/20140701_222405_zps3b736ba0.jpg.html" target="_blank">http://i103.photobucket.com/albums/m156/mrclean91/20140701_222405_zps3b736ba0.jpg</a> <a href="http://s103.photobucket.com/user/mrclean91/media/20140701_192129_zpsd3701eb1.jpg.html" target="_blank">http://i103.photobucket.com/albums/m156/mrclean91/20140701_192129_zpsd3701eb1.jpg</a> <a href="http://s103.photobucket.com/user/mrclean91/media/20140701_192120_zpsc94a75ba.jpg.html" target="_blank">http://i103.photobucket.com/albums/m156/mrclean91/20140701_192120_zpsc94a75ba.jpg</a> <a href="http://s103.photobucket.com/user/mrclean91/media/20140630_214552_zpsc5bd50f0.jpg.html" target="_blank">http://i103.photobucket.com/albums/m156/mrclean91/20140630_214552_zpsc5bd50f0.jpg</a> http://s103.photobucket.com/user/mrclean91/media/20140630_214537_zps8d4a71f3.jpg.html?sort=3&o=5 Why is your barrel nut backwards? |
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Posted: 7/19/2014 11:06:31 PM EDT
[#7]
Quote HistoryQuoted:
This system makes the DI vs Piston system an easy call. Why would anyone waist there time with an operating system that is obviously not worth trusting your life on? I guess for a toy gun to tinker with makes sense as it's easier to clean, but I want to be sure mine all go bang everytime without any tinkering. One that note, this one isn't even easy to clean, as you have to remove the whole handguard. You have hit the nail on the head. And I own two of these bastards. Still trying to get one to work right. 
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Posted: 7/21/2014 7:33:07 PM EDT
[#8]
Quote HistoryQuoted:
Why is your barrel nut backwards? That's the way the MI barrel nut for that handguard is installed. |
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Posted: 8/15/2014 7:54:44 PM EDT
[#9]
Quote HistoryQuoted:
AA owes me 30 minutes of my time. I went slow to make sure it worked. I did not like the idea of cutting a barrel nut, so a $10 bushing is better to play with. Took 100 rounds to break in, but run smooth now. AA send me a shirt? :) What is the distance between the back edge of the MI barrel nut and the rear face of the bushing? I'm wondering how it compares with the value 0f 0.85" given by AA which is supposed to be about the same as a standard barrel nut. |
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Posted: 8/20/2014 5:51:34 PM EDT
[#10]
I just received and installed the new XLP adjustable gas block today. I noticed there is no way of fine tuning the piston to gas block alignment like you can with the regular AA piston gas block. The piston rod doesn't slide through the gas block like the original does. You can't simply remove the spring and bushing and test for alignment binding by tilting the upper back and forth. Is there another method I'm not aware of? My XLP gas block did not come with any directions.
Also, I'm assuming all the way to + means 100% open.....I guess I'll find out when I test shoot. |
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Posted: 8/21/2014 3:34:44 AM EDT
[#11]
Nice
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Posted: 8/22/2014 12:00:31 PM EDT
[#12]
so i just bought this gasblock for a build im doing/upgrading. the 300 aac i have runs great on gas(direct impingment) but i can get it to run worth a darn with the piston. i checked the alighnment, correct setting, buffer weights(up and down in weight) the build is 8" 300, .089 gas port size. the issue is its short stroking like crazy, but it runs flawless on the regular gas system. anyone else have this issue?
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Posted: 8/22/2014 1:54:18 PM EDT
[#13]
what type of spring and buffer and supersonic or subsonic ammo?
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Posted: 8/25/2014 9:06:34 AM EDT
[#14]
standard spring and standard buffer for carbine, and supersonic. i have a light weight(reduced power spring) im going to give a shot, but as stated it cycles fine with the standard gas system, even locks the bolt to the rear on last round. i tried a standard gasblock this weekend of yours and its still the same exact issue of short stroking.
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Posted: 10/8/2014 8:28:34 AM EDT
[#15]
Do you have any pics of what they look like to show how much of a clearance issue it is.
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Posted: 10/11/2014 3:21:41 PM EDT
[#16]
I would really like to know how one goes about adjusting the gas knob on the 9.5" XLP 300BLK Upper receiver.
Without real photos how is one to tell? |
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Posted: 10/13/2014 4:06:07 PM EDT
[#17]
The button on the selector knob does not need to be pressed to move the selector. it is only for removing the selector for cleaning. i use an allen key to slide through the rail and push the selector to where i want it.
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Posted: 12/19/2014 11:48:36 PM EDT
[#18]
I would love to put a piston kit on my 11.5 in build but refuse to alter my MI rail or a part of the piston kit. Looks like I'm going DI ??
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Posted: 12/20/2014 3:01:08 PM EDT
[#19]
Quote HistoryQuoted:
I would love to put a piston kit on my 11.5 in build but refuse to alter my MI rail or a part of the piston kit. Looks like I'm going DI ?? Look into the Syrac Ordnance kit. It's not a quick to adjust but doesn't have the barrel nut issue like the Adams kit does. |
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Posted: 12/24/2014 5:44:20 PM EDT
[#20]
XLP will not fit under Centuion C4 rail. Would have been a good thing to know.
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Posted: 2/3/2015 9:03:46 PM EDT
[#21]
Any more feedback? I wonder if Adams Arms would be interested in offering a trade-in?
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Posted: 2/3/2015 10:39:27 PM EDT
[#22]
Buy a Sampson forend, it's what they use and they are dang nice and I have had most of what's out there! I have had very good service with AA and my piston runs flawless!!!
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Posted: 2/10/2015 3:16:32 PM EDT
[#23]
Quote HistoryQuoted:
XLP will not fit under Centuion C4 rail. Would have been a good thing to know. Can anyone post dimensions on this thing already?! I can't find them anywhere! |
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Posted: 3/5/2015 11:27:14 PM EDT
[#24]
Well.... Bad news for me...
After reading the entire thread this evening it looks like my current build idea is dead and I really need to start looking into a different Piston System or a totally new direction. My Lower is finished and I was getting ready to start the Upper. What I thought I wanted to do was an: Piston-Driven, Suppressed, Sub-Sonic 300BLK SBR by using a 10.3" Barrel, a 9" Alpha Rail, and a AA XLP Pistol Piston kit. Suppressor is going to be a AAC 762-SDN-6. So I guess I'll have to either go with a Syrac system or DI. And I really don't want to do a subsonic, suppressed DI... |
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Posted: 3/6/2015 12:38:27 AM EDT
[#25]
Have you looked at the Faxon uppers? Piston uppers that should fit your lower.
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Posted: 3/6/2015 9:28:38 AM EDT
[#26]
Quote HistoryQuoted:
Well.... Bad news for me...
After reading the entire thread this evening it looks like my current build idea is dead and I really need to start looking into a different Piston System or a totally new direction. My Lower is finished and I was getting ready to start the Upper. What I thought I wanted to do was an: Piston-Driven, Suppressed, Sub-Sonic 300BLK SBR by using a 10.3" Barrel, a 9" Alpha Rail, and a AA XLP Pistol Piston kit. Suppressor is going to be a AAC 762-SDN-6. So I guess I'll have to either go with a Syrac system or DI. And I really don't want to do a subsonic, suppressed DI... I have the Alpha rail on my AA and it works Great!!! |
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Posted: 3/7/2015 11:15:35 AM EDT
[#27]
I just received my xlp kit with Nib low mass carrier. Installed on my 15" Alpha rail fine.
You must install backwards: 1. Install rail 2. slide in piston 3. slide on xlp block 4. wrench through alpha hole to tighten block Easy Dr. M PS: at work, can upload pick later |
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Posted: 4/9/2015 12:08:49 PM EDT
[#28]
Has anyone used the XLP system with a Noveske NSR rail?
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Posted: 4/18/2015 10:41:36 PM EDT
[#29]
I've been wanting to try this out. Will probably be getting a conversion kit soon. Looks very interesting indeed.
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Posted: 4/28/2015 10:34:12 PM EDT
[#30]
I just purchased an xlp gas block and I'm glad I didn't read some of these posts. Just like the standard gas block, I found it works with a variety of different ff rails, with the addition of it now being able to fit under the rail. I have a fortis switch 5.56 rail and I got the xlp gas block specifically for it. It works great and everything fits like it should. The only criteria that needs to be met is that the op rod clears the barrel nut and the op rod bushing doesn't (it needs to rest on the front of the barrel nut).
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Posted: 4/28/2015 10:41:02 PM EDT
[#31]
Quote HistoryQuoted:
Edit still waiting on the answers from AA to my questions above with one more question added. I'm sure it got lost in the mix so asking again: How does the XLP gas block disassemble? From the looks of it it can't disassemble through the front of the gas block? ...I could be wrong, just going by what I can see. If it doesn't disassemble through the front of the gas block how do you disassemble the one piece op rod/cup from the system for maintenance? Also beings this is an adjustable gas block how does one go about adjusting it without having to remove the rail? You stated a Free Floating Piston System, what makes this a Free Floating Piston System?[/span][/span] The gas key is a little tricky. You have to push the button and pull it out at the same time. If you want to remove the op rod, loosen the set screws ant move the gas block forward until the op rod can be removed. The piston shaft is part of the block on the xlp, not part of the gas key. |
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