Warning

 

Close

Confirm Action

Are you sure you wish to do this?

Confirm Cancel
BCM
User Panel

Page AR-15 » AR Variants
AR Sponsor: bravocompany
Page / 52
Link Posted: 12/15/2010 1:26:36 PM EDT
[#1]
Quoted:
Quoted:
Quoted:
So, I just did some weighing to see how heavy this will be when I build it. Overall, I should be pretty close to 12 pounds unloaded (I was hoping for 11.5).

My numbers (my scale is accurate to 0.25 ounces).

SWFA SS 3-9x in LaRue SPR-E w/ Butler Creeks –– 1lb. 12.75oz.
Rainier Arms UM 20" w/ DPMS FH and gas tube –– 3lb. 3.75 oz.
Daniel Defense 7.62 Lite 12" complete kit –– 1lb. 3.75oz.
PRI front sight block with sight –– 3.25 oz.
MagPul ACR, buffer tube, spring, ASAP, Slash carbine buffer –– 1lb. 11.75oz.
Fulton Armory BCG –– 1lb. 2.75oz.
Mega MA-TEN Upper Receiver –– 15.75 oz.
Mega MA-TEN Lower Receiver with installed parts (minus stock) –– 1lb. 5oz.
Magpul PMAG (empty) –– 6.25oz.
Troy rear BUIS –– 1.75oz.

12 pounds 1.75oz. (give or take a smidge).

As an aside, I also broke out the ACR by itself: 15.25oz.


Pics of build?


It's not quite built yet. I've noticed a few issues that I'm working around.
- The Magpul ASAP sling plate needs to be relieved to fit around the back of the receiver
- The DD rail seems almost 1/8" too long for the FSB I've chosen. The gas port BARELY lines up. I opened up the FSB's gas port hole a bit to help funnel the gases, but I don't know if it's enough.
- The DD top rail doesn't really match the Mega receiver rail. The tops of the recoil lugs are matching, but the bottom of the sides are still maybe 1/16" lower. I can shift it up higher, but then the hole for the gas tube closes up too much that you can't get a gas tube in. Instead of grinding away to make it fit, I've left it as is. I see this in some of the other build pictures here.

So, I've got a bit more work to do until I'll show pictures.
- Looking at the bolt catch, I'm uncomfortable with how little it engages the boltface. I need to look at that to see if I can't get a little more engagement.


Strange my DD Lite 12.0 lines up perfectly with the top of my MATEN.  It was a little tight on the gas tube, but not a problem at all...

Wonder if DD's got some QC issues...
Link Posted: 12/15/2010 6:26:31 PM EDT
[#2]
I just complete my MA-Ten build and I wanted to give a quick thank you to everyone in this thread for your input when putting my shopping list together.  Built as follows:



- Rainier Arms 20" Ultra-Match barrel w/Armalite extension

- Rainier Arms low profile gas block

- Armalite BCG

- SWS E1 15"

- Magpul PRS

- Armalite buffer spring and buffer

- Geiselle S3G trigger

- Ergo Deluxe Grip

- Phase 5 EBR 2 bolt catch

- Bobro Engineering QD scope mount

- Troy BUIS

- SWFA SS 3-9x42 scope

- GG&G Extreme Duty Bipod (still in the mail)




pics to follow soon.
Link Posted: 12/15/2010 7:34:52 PM EDT
[#3]
Mute, I can't wait to see pics.  I went with the same barrel, GB, and BCG.  I can't wait to get a range report from you either, I don't think I will be able to really stretch the legs on mine untill spring.  I will be lucky if I can function check it before then.  I really debated getting that SWS handguard too. I wondered how it would look on a 20" barrel.  I ended up going with the sampson 13.2" rail.
Link Posted: 12/15/2010 8:29:38 PM EDT
[#4]
The rest of my parts came today I should get to shoot it this weekend, as well as my 6.8 and a new 5.56!
Link Posted: 12/15/2010 11:11:59 PM EDT
[#5]



Quoted:


Mute, I can't wait to see pics.  I went with the same barrel, GB, and BCG.  I can't wait to get a range report from you either, I don't think I will be able to really stretch the legs on mine untill spring.  I will be lucky if I can function check it before then.  I really debated getting that SWS handguard too. I wondered how it would look on a 20" barrel.  I ended up going with the sampson 13.2" rail.


I'll probably have some time to zero it in January but might not have extended range groupings until later in the year.  Well, I'd at least get a chance to see how the Rainier barrel does.  Your build sounds pretty cool too.  The Sampson rail looks good.

 
Link Posted: 12/16/2010 1:20:52 AM EDT
[#6]
Got my kac m110 gas block in today! slow but sure is the motto for this build

Pat
Link Posted: 12/16/2010 4:35:43 AM EDT
[#7]
Quoted:
Quoted:
Quoted:
So, I just did some weighing to see how heavy this will be when I build it. Overall, I should be pretty close to 12 pounds unloaded (I was hoping for 11.5).

My numbers (my scale is accurate to 0.25 ounces).

SWFA SS 3-9x in LaRue SPR-E w/ Butler Creeks –– 1lb. 12.75oz.
Rainier Arms UM 20" w/ DPMS FH and gas tube –– 3lb. 3.75 oz.
Daniel Defense 7.62 Lite 12" complete kit –– 1lb. 3.75oz.
PRI front sight block with sight –– 3.25 oz.
MagPul ACR, buffer tube, spring, ASAP, Slash carbine buffer –– 1lb. 11.75oz.
Fulton Armory BCG –– 1lb. 2.75oz.
Mega MA-TEN Upper Receiver –– 15.75 oz.
Mega MA-TEN Lower Receiver with installed parts (minus stock) –– 1lb. 5oz.
Magpul PMAG (empty) –– 6.25oz.
Troy rear BUIS –– 1.75oz.

12 pounds 1.75oz. (give or take a smidge).

As an aside, I also broke out the ACR by itself: 15.25oz.


Pics of build?


It's not quite built yet. I've noticed a few issues that I'm working around.
- The Magpul ASAP sling plate needs to be relieved to fit around the back of the receiver
- The DD rail seems almost 1/8" too long for the FSB I've chosen. The gas port BARELY lines up. I opened up the FSB's gas port hole a bit to help funnel the gases, but I don't know if it's enough.
- The DD top rail doesn't really match the Mega receiver rail. The tops of the recoil lugs are matching, but the bottom of the sides are still maybe 1/16" lower. I can shift it up higher, but then the hole for the gas tube closes up too much that you can't get a gas tube in. Instead of grinding away to make it fit, I've left it as is. I see this in some of the other build pictures here.

So, I've got a bit more work to do until I'll show pictures.
- Looking at the bolt catch, I'm uncomfortable with how little it engages the boltface. I need to look at that to see if I can't get a little more engagement.


- I modified the ASAP plate (ground most of the "points" off)
- Looking at my AR-15 and the MA-TEN bolt catch to bolt face engagement, it's pretty similar, so I left it.

So now I just need to shoot it to see if it works.

Pic:
http://img716.imageshack.us/img716/6076/megamatensprh.jpg
Link Posted: 12/16/2010 10:05:29 AM EDT
[#8]
Very Nice!!! Could you take pics of the magpul asap of where you ground off the points?? thanks
Link Posted: 12/16/2010 12:41:29 PM EDT
[#9]
Here's a quick glimpse.  Better pics when time permits:







 
Link Posted: 12/16/2010 2:06:33 PM EDT
[#10]
Quoted:
Very Nice!!! Could you take pics of the magpul asap of where you ground off the points?? thanks


I could have gone a different way, but I didn't want the "tips" to be too thin (and couldn't seem to get the angle right). Mainly it appears to be there just as a safety to keep it from completely rotating if the buffer tube nut comes loose.

MA-TEN modified:
http://img228.imageshack.us/img228/6422/asapmatenside.jpg
http://img139.imageshack.us/img139/7088/asapmatentop.jpg
http://img263.imageshack.us/img263/7775/asapmatenfront.jpg

Normal ASAP:
http://img594.imageshack.us/img594/5082/asapnormalside.jpg
http://img801.imageshack.us/img801/1450/asapnormaltop.jpg

Link Posted: 12/16/2010 3:14:35 PM EDT
[#11]
does anyone know which handguards/rails require a barrel nut and which ones dont ?

I think I want the jp handguard,if I buy a set do I still need a a dpms barrel nut,looks like it has its own designed barrel nut???

on a side note I just bough a chrome lined dpms BCG for $189 shipped off the EE also decided to go with a fluted 18" stainless bull barrel (midlength gas .936 gas block) citadel barrel.

http://www.shop.ar15hardware.com/18-Citadel-762x51-Stainless-Fluted-Barrel-cit308stlsfluted.htm  

the jp vikings tac tube seems to be winning out so far.....
Link Posted: 12/16/2010 3:37:28 PM EDT
[#12]
Quoted:
does anyone know which handguards/rails require a barrel nut and which ones dont ?

I think I want the jp handguard,if I buy a set do I still need a a dpms barrel nut,looks like it has its own designed barrel nut???

on a side note I just bough a chrome lined dpms BCG for $189 shipped off the EE also decided to go with a fluted 18" stainless bull barrel (midlength gas .936 gas block) citadel barrel.

http://www.shop.ar15hardware.com/18-Citadel-762x51-Stainless-Fluted-Barrel-cit308stlsfluted.htm  

the jp vikings tac tube seems to be winning out so far.....


I myself bought the JP rail and I understand you do not need the dpms barrel nut. You just have to purchase the dpms style thread pattern for the upper receiver collar.

Link Posted: 12/16/2010 3:57:18 PM EDT
[#13]
The jp handguards system for the dpms threads does not need a separate barrel nut. The kit comes with everything you need to install the hanguard tube and barrel to your receiver. I have one on one of my builds, photos of it earlier in this thread

Pat
Link Posted: 12/16/2010 4:18:03 PM EDT
[#14]
Quoted:
The jp handguards system for the dpms threads does not need a separate barrel nut. The kit comes with everything you need to install the hanguard tube and barrel to your receiver. I have one on one of my builds, photos of it earlier in this thread

Pat


yeah thats what it looked like, I have been admiring that pic of yours and all the others for that matter. since I am not adding anything other than the occassional bipod and a front flip, I think its the way for me to go.plus I like the way they look and they seem/look to be very solid rigs.
Link Posted: 12/16/2010 4:21:58 PM EDT
[#15]




Quoted:

does anyone know which handguards/rails require a barrel nut and which ones dont ?



I think I want the jp handguard,if I buy a set do I still need a a dpms barrel nut,looks like it has its own designed barrel nut???



on a side note I just bough a chrome lined dpms BCG for $189 shipped off the EE also decided to go with a fluted 18" stainless bull barrel (midlength gas .936 gas block) citadel barrel.



http://www.shop.ar15hardware.com/18-Citadel-762x51-Stainless-Fluted-Barrel-cit308stlsfluted.htm



the jp vikings tac tube seems to be winning out so far.....


All handguards require a barrel nut.  If they use a proprietary one they generally come with it.

Link Posted: 12/16/2010 5:54:07 PM EDT
[#16]
Sinner and Mute,

your guys have some great looking builds
Link Posted: 12/16/2010 6:17:14 PM EDT
[#17]
Quoted:

Quoted:
does anyone know which handguards/rails require a barrel nut and which ones dont ?

I think I want the jp handguard,if I buy a set do I still need a a dpms barrel nut,looks like it has its own designed barrel nut???

on a side note I just bough a chrome lined dpms BCG for $189 shipped off the EE also decided to go with a fluted 18" stainless bull barrel (midlength gas .936 gas block) citadel barrel.

http://www.shop.ar15hardware.com/18-Citadel-762x51-Stainless-Fluted-Barrel-cit308stlsfluted.htm

the jp vikings tac tube seems to be winning out so far.....

All handguards require a barrel nut.  If they use a proprietary one they generally come with it.


I should have worded it better. " which ones work off the existing nut and which ones have their own,that come with it"



Link Posted: 12/16/2010 8:23:22 PM EDT
[#18]



Quoted:



I should have worded it better. " which ones work off the existing nut and which ones have their own,that come with it"



As I mentioned, if they require a proprietary nut, they'll come with it.  I don't know of any for the SR25/DPMS platform that work with the stock barrel nut.



 
Link Posted: 12/16/2010 8:38:16 PM EDT
[#19]
I just recieved a Troy rail that was on backorder. (Ordered on black friday)

-Doesn't seem to require you to grind a notch into the barrel nut anymore.
-Rails line up perfectly.

http://i140.photobucket.com/albums/r17/ricerx1/AR/DSC_0288.jpg
Link Posted: 12/17/2010 12:11:45 PM EDT
[#20]
Quoted:
I just recieved a Troy rail that was on backorder. (Ordered on black friday)

-Doesn't seem to require you to grind a notch into the barrel nut anymore.
-Rails line up perfectly.

http://i140.photobucket.com/albums/r17/ricerx1/AR/DSC_0288.jpg


I have that same kind of troy rail on my mega ar 15 build. have been very impressed with it. the beauty of that design to me, lies in the fact that it sits flush to the entire front of the reciever,not just the top rail, and that allowed me to slide my side rail (kac)covers ALL the way back to the front of the reciever. with covers on the sides and  the bottom ,it makes for a real nice hold.

Link Posted: 12/17/2010 1:40:38 PM EDT
[#21]
Quoted:
Quoted:
I just recieved a Troy rail that was on backorder. (Ordered on black friday)

-Doesn't seem to require you to grind a notch into the barrel nut anymore.
-Rails line up perfectly.

http://i140.photobucket.com/albums/r17/ricerx1/AR/DSC_0288.jpg


I have that same kind of troy rail on my mega ar 15 build. have been very impressed with it. the beauty of that design to me, lies in the fact that it sits flush to the entire front of the reciever,not just the top rail, and that allowed me to slide my side rail (kac)covers ALL the way back to the front of the reciever. with covers on the sides and  the bottom ,it makes for a real nice hold.



Anybody have x.xoz weight on that TROYrail(including all rail hardware/bbl nut)?
Link Posted: 12/17/2010 3:40:11 PM EDT
[#22]
I have it with me at work and I weighed it with the barrel nut. About 1.5 lbs (24oz) Sorry I don't have a more accurate scale, only have one for weighing produce here.
Link Posted: 12/17/2010 4:59:48 PM EDT
[#23]
Quoted:
I just recieved a Troy rail that was on backorder. (Ordered on black friday)

-Doesn't seem to require you to grind a notch into the barrel nut anymore.
-Rails line up perfectly.

http://i140.photobucket.com/albums/r17/ricerx1/AR/DSC_0288.jpg


Dammit I had the Troy rail back ordered & they told me it wouldn't fit the MaTen . Is yours Armalite ?I guess i got plenty of time to decide on a rail since my Krieger barrel has a 5 month lead time .
Link Posted: 12/18/2010 12:38:04 AM EDT
[#24]
I see a couple of the SWFA ss scopes on here, and they look like the new 3-9 power SS, or the 10 power HD, both of which i have been thinking about picking up. So how do you guys like them? I have read several reviews about them being great values and comparable to glass costing several hundred dollars more. However I have not ever used a magnified optic, or actually even looked through many, so I dont have any base line to compare to.

How do you guys like them? Do you have any higher end scopes to compare them to? My dilema is i am torn between getting one of the 3-9ss scopes for 600ish or going all in and getting a nice 2-10 nightforce for two times the price. Is double the price worth it in your guys opinions?

Thanks
Pat
Link Posted: 12/18/2010 1:51:35 AM EDT
[#25]







Quoted:




I see a couple of the SWFA ss scopes on here, and they look like the new 3-9 power SS, or the 10 power HD, both of which i have been thinking about picking up. So how do you guys like them? I have read several reviews about them being great values and comparable to glass costing several hundred dollars more. However I have not ever used a magnified optic, or actually even looked through many, so I dont have any base line to compare to.
How do you guys like them? Do you have any higher end scopes to compare them to? My dilema is i am torn between getting one of the 3-9ss scopes for 600ish or going all in and getting a nice 2-10 nightforce for two times the price. Is double the price worth it in your guys opinions?
Thanks



Pat









The SS is a great value.  I got the 3-9x FFP.  It hold its zero.  The knobs are accurate and the scope itself is fairly durable.  Optical quality is quite good for the cost.  In its price range, there aren't many scopes that deliver all of these qualities as well.  It's not comparable to the optical quality of the higher end scope, but it's good enough that you can see and identify any target you're likely to shoot at under 800 yards  For comparison, I currently have or have previously owned scopes by Leupold, S&B, US Optics and Hensoldt.  If you're looking for a variable FFP scope that has a mil reticle and mil adjustments, it gives you great bang for the buck.  Now, it doesn't have illuminated reticles and for shooting past 800 yards I prefer higher magnification, but on a semi-auto precision rifle I think this scope is a good match.  If you decide to go up to the NF it's not a bad match.  I personally prefer my reticle and adjustments to match (i.e. mil/mil or moa/moa) and FFP reticles, but I can't say anything really bad about NF scopes.

 
Link Posted: 12/18/2010 9:44:04 AM EDT
[#26]

another pic w/ scope.
Link Posted: 12/18/2010 10:55:44 AM EDT
[#27]
Looks nice! What scope it that?
Link Posted: 12/19/2010 2:01:34 AM EDT
[#28]
Just as an update.

- I still haven't fired mine yet.

But, I was playing around in the safe and pulled out my AR-10s. Curious, I looked to see whether the MA-TEN upper/lower receiver halves were swappable. What I found:

- Using a AR-10 lower with the MA-TEN upper appeared to work well. Everything fit, mag inserted, no apparent issues. Unknown feeding (no test fire performed).

- Using the AR-10 upper on the MA-TEN lower was problematic. First the front takedown pin would not close. Second, the MagPul PMAG would not lock into the lower. I think it front edge was hitting in the AR-10 upper. Otherwise, it "looked" like it fit.
Link Posted: 12/19/2010 8:35:45 AM EDT
[#29]
There is a mag shelf on the AR-10 upper that will need to be removed to have it work on any SR-25 pattern lower.





Would you be able to snap some pics of the mis matched uppers and lowers? This is good info, as I am planning on an AR-10 upper for my MA-TEN combo.



 
Link Posted: 12/19/2010 8:46:06 AM EDT
[#30]
Quoted:
Looks nice! What scope it that?


It's a millet trs-1.

sighted it in yesterday.  set the target at 50 yards and shot about 5 times.  couldn't even hit the paper!  brought the target in to 25 and finally found it was about 5 inches low!?!?  anyways, got it adjusted and zeroed to 100 yards and worked out the 4-16 power.. it is awesome and really clear.  

problem was i left it zoomed at 16 when I took it deer hunting last afternoon and we spooked a good sized buck.  i tried my damnedest to "find" him in my scope that was zoomed in all the way so i could attempt a running shot!  anyways, the scope shoots really well and i bought it used for $210 off the EE.
Link Posted: 12/19/2010 7:16:06 PM EDT
[#31]
I got the Armalite barrel in the upper (I thought that was suppose to be the hard part) but the outside Vtac handguard nut won't go on very far it's not cross threaded or gauled just tightens up way to soon? I tried wire brushing off the anodizing (on the upper threads) as suggested..... didn't help it still won't screw but about half way.  Broke my crappy strap wrench getting it off the last time. I gotta think that the upper treads are messed up because the barrel nut screws all the way into the outer nut from either direction so it's got to be the upper!

I will call Mega and Raiieer tomorrow and see what they say?

I thought I was going to shoot this thing soon, I was really looking forward to it!!
Link Posted: 12/19/2010 7:23:27 PM EDT
[#32]
Started assembling today, still waiting on some parts to come in.

Still haven't decided on the barrel, but I know I want 20" or longer.

The lower parts kit went in with no problems.  The only concern I have is the trigger pins, felt a little loose, like they could slide back and forth some.



Link Posted: 12/19/2010 7:35:42 PM EDT
[#33]
Quoted:
I got the Armalite barrel in the upper (I thought that was suppose to be the hard part) but the outside Vtac handguard nut won't go on very far it's not cross threaded or gauled just tightens up way to soon? I tried wire brushing off the anodizing (on the upper threads) as suggested..... didn't help it still won't screw but about half way.  Broke my crappy strap wrench getting it off the last time. I gotta think that the upper treads are messed up because the barrel nut screws all yhe way into the outer nut from either direction so it's got to be the upper!

I will call Mega and Raiieer tomorrow and see what they say?

I thought I was going to shoot this thing soon, I was really looking forward to it!!


Are you sure you have the correct dpms barrel nut? I would guess your nut is an armalite nut which wont fit the maten upper. Yours would be the first maten that I have heard of with something out of spec, so I am going to lean towards wrong barrel nut or the threads are cut poorly on the nut. When I installed my vtac from jp it went on with out any issues. Remember just because you have an armalite barrel doesn't mean u can use an armalite handguard or barrel nut I have an armalite nut at home and I will try threading it on tonight and see what happens and see if it is like what you #describe.
Pat
Link Posted: 12/19/2010 7:45:27 PM EDT
[#34]
Quoted:
Quoted:
I got the Armalite barrel in the upper (I thought that was suppose to be the hard part) but the outside Vtac handguard nut won't go on very far it's not cross threaded or gauled just tightens up way to soon? I tried wire brushing off the anodizing (on the upper threads) as suggested..... didn't help it still won't screw but about half way.  Broke my crappy strap wrench getting it off the last time. I gotta think that the upper treads are messed up because the barrel nut screws all yhe way into the outer nut from either direction so it's got to be the upper!

I will call Mega and Raiieer tomorrow and see what they say?

I thought I was going to shoot this thing soon, I was really looking forward to it!!


Are you sure you have the correct dpms barrel nut? I would guess your nut is an armalite nut which wont fit the maten upper. Yours would be the first maten that I have heard of with something out of spec, so I am going to lean towards wrong barrel nut or the threads are cut poorly on the nut.  

Pat

Thanks Pat, I bought the Armalite barrel, Bolt and Vtac handgard from them and it was suppose to be compatible. I understand there are some differences but I can't figure why they would ship something they knew wouldn't work like the wrong nut?!? I haven't messed up the threads yet on the upper so I hope it's just the nut.
Link Posted: 12/19/2010 9:17:34 PM EDT
[#35]
Anglingarchitect

the barrel and bolt is correct, those must both match. However there are two seperate thread types for 308 handguards, the armalite and dpms patterns are different for the barrel nut. No matter which barrel and bolt combo you use, you must use a dpms threaded nut for your barrel and handguard install.

I just screwed my armalite nut onto my dpms threaded Maten upper and it does what you say yours is doing. It threads on a few turns, maybe a third of the way or so, and then binds. You will need to contact whoever you got the rail system from and try to exhange it for a dpms threaded vtac. If its was from rainer and u ordered it all at the same time with your reciever set i am surprized they did not catch the mix up then and atleast contact you to make sure you knew they wouldnt work together.

Pat
Link Posted: 12/19/2010 11:24:12 PM EDT
[#36]
Anybody know of a link with a review/report/feedback on those Rainier Ultra Match barrels? I'm on the fence as to what to buy right now. Should have an MA10 set next week.
Link Posted: 12/20/2010 10:38:38 AM EDT
[#37]
Thanks Pat, That's got to be the problem, I didn't order it at the same time as my Upper/Lower but did order all the other parts for it from Rainier and told them what it was for, so we will see how they want to handle it.
Link Posted: 12/20/2010 12:18:38 PM EDT
[#38]
Quoted:
Anybody know of a link with a review/report/feedback on those Rainier Ultra Match barrels? I'm on the fence as to what to buy right now. Should have an MA10 set next week.


I have a Rainer Arms 16 in. Ultra Match and can give you several good reasons why I like them besides accuracy:

1)  You can use a standard AR-15 gas block with them.
2)  You can use a standard AR-15 gas tube with them.
3)  They have a great profile and are lighter than similar barrels.
4)  They are threaded.
5)  They have M4 feed ramps.

Between the MA-TEN taking most standard AR-15 lower  parts, Slash Buffer allowing the use of standard AR-15 stocks, and the Rainier Arms barrels utilizing similar AR-15 components I was pushed over the edge to start my .308 build.
Link Posted: 12/20/2010 4:27:22 PM EDT
[#39]
I have one of the 16" Ulltamatch barrels as well it very accurate with 155gr TAP.
Link Posted: 12/20/2010 4:58:48 PM EDT
[#40]
Quoted:
Quoted:
Anybody know of a link with a review/report/feedback on those Rainier Ultra Match barrels? I'm on the fence as to what to buy right now. Should have an MA10 set next week.


I have a Rainer Arms 16 in. Ultra Match and can give you several good reasons why I like them besides accuracy:

1)  You can use a standard AR-15 gas block with them.
2)  You can use a standard AR-15 gas tube with them.
3)  They have a great profile and are lighter than similar barrels.
4)  They are threaded.
5)  They have M4 feed ramps.
Between the MA-TEN taking most standard AR-15 lower  parts, Slash Buffer allowing the use of standard AR-15 stocks, and the Rainier Arms barrels utilizing similar AR-15 components I was pushed over the edge to start my .308 build.



would  not  ar 10  with "m4 feed ramps" need an upper with the cuts to take advantage of the m4 cut angle they put on the barrel? I see no cuts on my ma ten upper,although you could put them in easily if need be.

Link Posted: 12/20/2010 5:00:23 PM EDT
[#41]
Just an fyi to those who are building ma-tens now. You can use a AR-15 gas tube with a dpms bolt carrier but you have to use an armalite AR-10 gas tube when using a armalite bolt carrier. The ar-10 tube is about an 1/8" longer

Posted Via AR15.Com Mobile
Link Posted: 12/20/2010 5:18:22 PM EDT
[#42]
I ordered barrel and handguard from Rainer and i accidentally ordered the wrong JP handguard - i wrote in an email that i wanted it to cover the FSB. It was attached to the email explaining that i bought the maten from them. They called 30 min later at 9:30 PM to make sure it was ok. You give them a call and it'll be all worked out. Definatly the best customer service i've ever recieved.


Quoted:
Thanks Pat, That's got to be the problem, I didn't order it at the same time as my Upper/Lower but did order all the other parts for it from Rainier and told them what it was for, so we will see how they want to handle it.


Link Posted: 12/20/2010 5:45:05 PM EDT
[#43]
Quoted:

would  not  ar 10  with "m4 feed ramps" need an upper with the cuts to take advantage of the m4 cut angle they put on the barrel? I see no cuts on my ma ten upper,although you could put them in easily if need be.



Due to the larger size of the barrel extension there are no issues.
Link Posted: 12/21/2010 5:58:21 PM EDT
[#44]
well, this has been a mission and a half....... hunting down all the stuff I need and I have changed my original plan. I really wanted this set up in a midlength gas system.I finally have everything figured out and ordered. ofcourse its a bit more than first planned,but thats going to be the way it is. heres my break down and its going to take another 2 weeks for the JP stuff to come in. so far the ma ten set,bcg,gas block,tube and the barrel are in hand.very pleased with the stuff so far. heres what I got going, with the damages incurred(total cost shipping and fees, EVERYTHING!!!) a dpms pattern barrel set up was chosen.

MA TEN set- $560
Citadel 18" Bull barrel Profile 416  Stainless fluted barrel  Midlength gas .925
Chrome lined DPMS Pattern BCG
midwest industries block,with tube and pin- all these for $513
JP/VTAC Modular Hand Guard System, full length 12.5 "
front sight strip,another 2 inch strip and an uncle mikes QD sling swivel
JP Large-Profile Tactical stainless compensator BTW required dimensionally($100) -all these from JP for-$340.20
troy battle sight set-$170 EE
RRA LPK with ergo and 2 stage $135  EE
3 dpms steel mags-EE $57
dpms a2 308 buttstock kit-dpms $115

$1890.20

no glass or sling, but have lupys around so add maybe $185 for a Larue spr QD mount, if I go that route. personally want to gun kote the stainless stuff,keep it all black. I dying to get her done!!!
Link Posted: 12/22/2010 10:46:54 PM EDT
[#45]
As of tonight I have all but one part in my possession for my MA-TEN build. I picked up my upper/lower combo today and I am impressed with the finish and quality of the Mega unit. Just for the hell of it I tried to put the barrel into the upper and it is very tight. I think I read somewhere in this threat that folks here have been freezing the barrels and heating the uppers to get things together. I have the barrel cooling and the upper in the oven at 150 degrees to see if that will help. I will post some pics when i have a chance.


ETA:  Geez, i just put my barrel in the freezer for 30 minutes and heated the upper to 200 degrees, and I still couldn't get the barrel extension to drop into the upper more than a quarter inch. Not sure what I will try next.
Link Posted: 12/23/2010 12:07:48 AM EDT
[#46]
Is it a Armalite barrel extension? Armalites take a little more effort to seat the barrel extension in the upper. I have the DPMS extension and a RA Ultramatch 16" I used a heat gun tp heat the upper and it slide right in.  Read this it will help install your barrel in to the upper Mega Upper Help
Link Posted: 12/23/2010 12:22:43 AM EDT
[#47]
Quoted:
Is it a Armalite barrel extension? Armalites take a little more effort to seat the barrel extension in the upper. I have the DPMS extension and a RA Ultramatch 16" I used a heat gun tp heat the upper and it slide right in.  Read this it will help install your barrel in to the upper Mega Upper Help


YEah, it is an Armalite extension, ill take a look at the link. Thanks very much.
Link Posted: 12/23/2010 1:38:33 AM EDT
[#48]
Quoted:
Quoted:
Is it a Armalite barrel extension? Armalites take a little more effort to seat the barrel extension in the upper. I have the DPMS extension and a RA Ultramatch 16" I used a heat gun tp heat the upper and it slide right in.  Read this it will help install your barrel in to the upper Mega Upper Help


YEah, it is an Armalite extension, ill take a look at the link. Thanks very much.


I can't believe how tight this extension is. I can attack it with a mallet and smash it in there, but it does make me a little nervous. If I actually do get it in there how in the world would I get the barrel off If I ever needed to change it. I have put together a fair number of uppers in the last 10 years and I have never had one so tight to make me think that if I actually hammered it home I would never be able to take it apart again.

Also, what are the chances that something is out of spec?  I bet all the extensions come from Armalite and they are probably pretty uniform, same with the Mega, I would be surprised if it the upper hole was to small. Anyway, right now I have no idea if I should smash it in there or do something else.

Edit to add some pics, I am going to put the lower together tomorrow, and deal with the barrel after that.



Link Posted: 12/23/2010 2:26:55 AM EDT
[#49]
I had the same problem.  Keep the barrel in the freezer overnight, and try to heat the barrel nut threads with a heat gun.  That should allow the barrel to finally fit into the upper.
Link Posted: 12/23/2010 12:37:37 PM EDT
[#50]
Quoted:
Quoted:
Quoted:
Is it a Armalite barrel extension? Armalites take a little more effort to seat the barrel extension in the upper. I have the DPMS extension and a RA Ultramatch 16" I used a heat gun tp heat the upper and it slide right in.  Read this it will help install your barrel in to the upper Mega Upper Help


YEah, it is an Armalite extension, ill take a look at the link. Thanks very much.


I can't believe how tight this extension is. I can attack it with a mallet and smash it in there, but it does make me a little nervous. If I actually do get it in there how in the world would I get the barrel off If I ever needed to change it. I have put together a fair number of uppers in the last 10 years and I have never had one so tight to make me think that if I actually hammered it home I would never be able to take it apart again.

Also, what are the chances that something is out of spec?  I bet all the extensions come from Armalite and they are probably pretty uniform, same with the Mega, I would be surprised if it the upper hole was to small. Anyway, right now I have no idea if I should smash it in there or do something else.

Edit to add some pics, I am going to put the lower together tomorrow, and deal with the barrel after that.

http://i425.photobucket.com/albums/pp333/azeyecap/DSC_1356.jpg
http://i425.photobucket.com/albums/pp333/azeyecap/DSC_1358.jpg





DONT DO THAT!!! you will gall up the inside of the upper,theres a simple fix ,trust me. get some dark gray wet sand paper(320 grit). mine was the same way. its the coating,thats thick,that is holding it up.I have had it happen with others before.if you just wet sand in a circular/cylindrical direction inside the upper area only were it meets.lightly,while testing for fit. dont go nuts,and take your time. clean the barrel extension allittle too. after this mine slid in nice and tight. an easy fix.






Page / 52
Page AR-15 » AR Variants
AR Sponsor: bravocompany
Close Join Our Mail List to Stay Up To Date! Win a FREE Membership!

Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. One new winner* is announced every week!

You will receive an email every Friday morning featuring the latest chatter from the hottest topics, breaking news surrounding legislation, as well as exclusive deals only available to ARFCOM email subscribers.


By signing up you agree to our User Agreement. *Must have a registered ARFCOM account to win.
Top Top