Which AR-10?

[belizejet]

I have notices that AR-10's take different mags. If I were to get one I want one that has the easiest mags to obtain. I hate paying out the nose for mags and not being able to find them.

[ray1970]

If you had asked this earlier last year, I would have said look for something that takes the P-mags. But, I have no idea what availability of magazines is nowadays since you will be limited to 15 rounds. And, in all reality, you will probably just be able to find California-legal 10 rounders.

[SideShow Bob]

Armalite makes a 15 round magazine for their AR10s. They are prioptary to Armalite. With the other AR 10s you are now limited to 5 & 10 round magazines. Unless of course you stocked up prior to 7/1/13 in anticipation of purchasing an AR10.

Edit:
Armalite has 5, 10 and 15 round magazines in stock now and offering 5 packs of these at special pricing.

[johngraves2]

I believe there are three magazine types for the AR-10, one only works in an Armalite, one for Rock River, then the PMAG and DPMS type works in just about all others.

I am still so surprised that there was never standardization for the AR-10 like there is for the AR-15. Very annoying. and from my understanding the various specs of all the different brand AR-10s is very small, but enough that a lot of things are not interchangeable.

[Lars]

There are still on-line dealers that will ship out disassembled p-mags as rebuild kits, which as far as I know is legal.

[merl]

I believe there are three magazine types for the AR-10, one only works in an Armalite, one for Rock River, then the PMAG and DPMS type works in just about all others.

I am still so surprised that there was never standardization for the AR-10 like there is for the AR-15. Very annoying. and from my understanding the various specs of all the different brand AR-10s is very small, but enough that a lot of things are not interchangeable.

The rock river version takes FAL mags right? So at least it is a standard mag, not something gun specific.

[belizejet]

Thanks. I was really looking for one just so I have one. Dont need the big mags for it right now. I have other options if I need a rifle with more ammo capacity at my disposal. I just want and AR10 style rifle. I was looking at an M&P 10. What does everyone think of it?

[SideShow Bob]

Thanks. I was really looking for one just so I have one. Dont need the big mags for it right now. I have other options if I need a rifle with more ammo capacity at my disposal. I just want and AR10 style rifle. I was looking at an M&P 10. What does everyone think of it?

I wish it was out when I was looking at AR-10s, it comes from the factory with all Ambi controls (lefty here) and the gas block/front sight mount is receiver rail height, no need to search around for a correct height front sight. Just get what ever set tickles your fancy.

[ChunkyMonkey]

Thanks. I was really looking for one just so I have one. Dont need the big mags for it right now. I have other options if I need a rifle with more ammo capacity at my disposal. I just want and AR10 style rifle. I was looking at an M&P 10. What does everyone think of it?


I like mine.. I had a POF 308 in 14.5" prior, loved that one too. But it was more like battle rifle than what I intend it to be. So MP10 came into the picture..and been enjoying it ever since.

MP10 w/ Harris Bipod, Surefire brake, and acog 4x

39229

[brutal]

The rock river version takes FAL mags right? So at least it is a standard mag, not something gun specific.


I wish it was out when I was looking at AR-10s, it comes from the factory with all Ambi controls (lefty here) and the gas block/front sight mount is receiver rail height, no need to search around for a correct height front sight. Just get what ever set tickles your fancy.

It may have already been mentioned, but the front sight on the RRA is proprietary.

Sent from a device smart enough to send a man to the moon if the battery could last the trip.

[SideShow Bob]

It may have already been mentioned, but the front sight on the RRA is proprietary.

Sent from a device smart enough to send a man to the moon if the battery could last the trip.

I was speaking of the M&P-10, guess the quote from the OP wasn't enough clarification......[Tooth]

Also the price point of the S&W-10 with all it's Ambi features is right in line with a base model Armalite, DPMS and RRA, all of which are righty controls only.
This makes it even more appealing to the few lefties in the world.

[brutal]

Hard to track well on the phone.

Sent from a device smart enough to send a man to the moon if the battery could last the trip.

[SideShow Bob]

It may have already been mentioned, but the front sight on the RRA is proprietary.

Sent from a device smart enough to send a man to the moon if the battery could last the trip.

This is also true for the Armalite, as far as height is concerned.

[johngraves2]

I have the MP-10. It is one great rifle. plus it is a great price. for sure get one.

[Sixgun]

I'm thinking this is my next gun.....

http://www.ruger.com/products/sr762/index.html?utm_source=guntalk&utm_medium=475x90banner&utm_term=oct13&utm_content=sr762&utm_campaign=guntalk+sr762+475x90banner+oct13

[JohnH0726]

I have three AR10's. A DPMS LR308 that takes the DPMS or SR25 mags, a Rock River LAR308 that take FAL mags, and a Ruger SR762 that takes the Pmags, DPMS mags, and SR25 mags. The Ruger came with 3 Pmags and I already had 12 of the DPMS mags, and I have about 30 FAL mags, so I'm set as far as quantity goes. Have not regretted buying any on of the three, but the DPMS is pretty much a safe Queen as its about 16 pounds with bipod, optics and sling. Good off the bench only. The Ruger is surpizingly light at a little over 8 #'s and so far has turned out to be very accurate.

[bigun1962]

Personally I like the pmags. 10 rounder for compliant wildlife and Colorado libitard laws. I personally have the higher capacity mags loaded in my war bag. Have a great day.

[huntnfishn5280]

Bushmaster 308 takes the Pmags and is reasonably priced....sub 1K on Gunbroker

[backpacker21]

SIG716 is a great platform. It's gas operated and mine eats everything. With 150gr AE, it will make 1.5MOA groups and with match ammo, sub MOA and it takes Magpul P-Mags.

[SideShow Bob]

.........

http://www.youtube.com/watch?v=grbSQ6O6kbs&feature=youtube_gdata_player

[ray1970]

Lol.
[zombie1]

[belizejet]

Ended up picking up a DPMS LR-308 in a pistol trade. Put my ACOG on it and it's a pretty nice rifle. I would like to re barrel it with something longer for accuracy and possibly hunting.

[brutal]

SIG716 is a great platform. It's gas operated and mine eats everything. With 150gr AE, it will make 1.5MOA groups and with match ammo, sub MOA and it takes Magpul P-Mags.

Until you put a suppressor on it, then good luck with that eats everything.

P.S. they're all gas operated.

[TheBelly]

SIG716 is a great platform. It's gas operated and mine eats everything. With 150gr AE, it will make 1.5MOA groups and with match ammo, sub MOA and it takes Magpul P-Mags.

Slap a can on that thing, and that 'eats everything' statement might be in question....



ETA: Oops, someone beat me to it.

[TheBelly]

Ended up picking up a DPMS LR-308 in a pistol trade. Put my ACOG on it and it's a pretty nice rifle. I would like to re barrel it with something longer for accuracy and possibly hunting.

longer isn't the be-all/end-all for accuracy.

I've got a 16" .308 AR that I use for hunting, and it's pretty devastating. Moving through the woods with a shorter barrel is really handy. I almost guarantee that once you go to a shorter barrel, you won't want to go back. I've got a few AR-10-style guns that have 20" barrels, and when you strap a can on the end, they can get slightly unwieldy.






Getting this back on topic:

Think of this, though: some metal magazines can allow for a longer OAL, if you're into reloading.

[Tweety Bird]

I just finished building one. Used an 80% lower from Ares Armor. Turned out very well.

Bought a kit from Blackthorne Products that included the upper and the FCG. When I milled the lower, I left it just a shade narrow on purpose and wound up needing to work it a bit with a dremel and a file to get the trigger and hammer to operate smoothly, but I expected that.

It had some extraction issues that were fixed with a better quality extractor and ejector. Now it runs perfectly.

The one drawback is that I don't dare hand it to my wife to shoot until I tame the recoil; I just know she'll hate it. So now I'm looking for a muzzle brake and/or recoil-absorbing butt stock. I'll try the muzzle brake first, I think, but every gun show I go to has only the .22 caliber versions. I suppose I can find one online somewhere.

I really like having this .308 AR platform. The Ares Armor lower is a DPMS platform and I bought some Magpul magazines for it at a gun show, which work fine. Funny thing about those magazines is that in order to disassemble them to clean them, I had to drill out a silly little pop rivet. Go figure...

Thinking about trying an 80% for a 5.56 next.

[fatboy93]

"Funny thing about those magazines is that in order to disassemble them to clean them, I had to drill out a silly little pop rivet. Go figure..."

[panic]

[brutal]

I thought after they were emptied, you just threw them away?

I've been doing it all wrong.

[zimagold]

I had a Ruger SR762 and know another person with one. Both were surprisingly accurate. 165gr ballistic tips with varget in both guns produced 0.8"-1" five shot groups on average. Mine would hold 1MOA out to 600yrds.

I ran into issues running it suppressed. Gas block did not have enough adjustment so I sold it. I haven't bought another AR10 style rifle since.

I also owned the smaller ruger SR556, only complaint was the weight.

[Stevensje]

Slap a can on that thing, and that 'eats everything' statement might be in question....



ETA: Oops, someone beat me to it.


What's the story with the Sig716 and suppressors? Is it possible to suppress it reliably and what does it take?

[brutal]

What's the story with the Sig716 and suppressors? Is it possible to suppress it reliably and what does it take?

My 1st Gen 716P would not run with a can 762-SDN-6 in my case.

The replacement rifle has been solid, although I feel not as accurate. I gotta get it out more to be sure. last time I had too many changes at once and the shooter wasn't grouping well.

[Chief_of_Scouts]

I have been considering a Sig 716P. I will most likely want to run my SilencerCo Omega on it. Are you guys advising that this may be a bad combo? If so, which AR-10 would you recommend for using with a can?

[babarsac]

I am trying very hard to resist a PA-10. I know PSA is still working out the kinks but they are having some great deals on them. $600 for a kit and $75 for a lower ain't bad at all.

[osok-308]

I am trying very hard to resist a PA-10. I know PSA is still working out the kinks but they are having some great deals on them. $600 for a kit and $75 for a lower ain't bad at all.

I was very close to going with a PA-10, however I decided to go with the Aero Precision M5 for my build. You definitely pay a bit more for the whole rifle for sure, but I'd rather wait a bit longer and get a rifle that I have more confidence in. Plus, I feel like the base M5 looks a bit more like the Knights Armament SR-25.

[sampson]

I've been eyeballing aero m5 as well. Obama will probably "make" me buy it.

[belizejet]

http://images.tapatalk-cdn.com/15/12/06/b36aa0be87cb7b4b1c47415d7b92e3ff.jpg

I went with 6.5 Creedmore in the end. Still not done but I can't wait for the two more parts I need.

[osok-308]

I went with 6.5 Creedmore in the end. Still not done but I can't wait for the two more parts I need.

Nice. What parts did you use (other than the Magpul stuff, which is obvious!)

[belizejet]

Aero P lower, upper, and BCG. Ballistic advantage gas block, tube and barrel. The barrel is 22", 1:8 twist bull with the .936 gas block

[Musashi]

Isn't Ballistic advantage now owned by Aero Precision? I am curious to see how that puppy shoots as I am considering one of their uppers.

[DangerLee_Industries]

Isn't Ballistic advantage now owned by Aero Precision? I am curious to see how that puppy shoots as I am considering one of their uppers.
Yes as of last Jan Aero owned 49% of ballistic advantage. I was talking with the owner of BA about it then. He's a good dude and those barrels a high quality.

[BPTactical]

I am trying very hard to resist a PA-10. I know PSA is still working out the kinks but they are having some great deals on them. $600 for a kit and $75 for a lower ain't bad at all.

I have handled a couple of PA-10's. Not impressed, seems to be cheaply done and I noticed on one that is unfired the bolt is sticky on the barrel lugs.

Pony up the extra glue for the M&P 10.

[osok-308]

I have handled a couple of PA-10's. Not impressed, seems to be cheaply done and I noticed on one that is unfired the bolt is sticky on the barrel lugs.

Pony up the extra glue for the M&P 10.

This is why I chose to go with the M5. My palmetto AR-15 upper has been great, but I've heard about qc with the pa-10. I figure, might as well spend a bit more on something that I know should be quality. Better that than wishing I had spent more on a better gun.

[gat_wrench]

I am very happy with my Windham... no issues in over 1,500 rounds, smooth, well put-together gun and priced pretty well. I think I paid $1,100

[Frac]

I appreciate all of the input in this thread. I picked up an Aero M5 lower from a Brownells sale recently. I'm very happy with fit and finish. I read some older posts that said their lower did not have a tensioning screw. My lower has one. It isn't a feature that I use, but I wanted to mention it in case it may be helpful to someone else.

This build will be a long, slow project. My funds are going first to replacing hunting gear. I wanted to get the lower while I could.

I have a stack of pmags from the Colorado Airlift program a couple years back. They fit the magwell perfectly and drop free.

[osok-308]

This build will be a long, slow project. My funds are going first to replacing hunting gear. I wanted to get the lower while I could.

I have a stack of pmags from the Colorado Airlift program a couple years back. They fit the magwell perfectly and drop free.

This is pretty much my MO. I have the lower complete except for a stock, which I'm still debating on.

[SA Friday]

If you are going to build, get an Aero M5 and Aero upper. Just make sure to get the Aero M5 lower parts kit as the take-down and pivot pins are proprietary lengths. Everything else is standard DPMS. The upper is DPMS high.

If you want to buy and then upgrade, the M&P-10 is the way to go.

If you buy a RRA 308 you will make baby Jesus cry. They are awful things.

Side note: 25 round Pmags are made to fit military spec M118LR overall length. I don't think any of the other mags will, nor will the other capacity Pmags for AR-10s. Something to think about when building if for long range.

[brutal]

If you are going to build, get an Aero M5 and Aero upper. Just make sure to get the Aero M5 lower parts kit as the take-down and pivot pins are proprietary lengths. Everything else is standard DPMS. The upper is DPMS high.

If you want to buy and then upgrade, the M&P-10 is the way to go.

If you buy a RRA 308 you will make baby Jesus cry. They are awful things.

Side note: 25 round Pmags are made to fit military spec M118LR overall length. I don't think any of the other mags will, nor will the other capacity Pmags for AR-10s. Something to think about when building if for long range.

You got that right. A friend's son bought one when they first came out and RRA didn't have the iron sights in stock. Apparently they're specific to RRA and they ended up having to change out the rail to get anything to fit. What a CF.

Now I have to go and check M118LR in my 20 rounders...

[SA Friday]

Now I have to go and check M118LR in my 20 rounders...
Let me know what you find. I was in a discussion about this yesterday afternoon. I was told by a very good authority that the 25s would fit and the 20s wouldn't, but this only applied specifically to M118LR spec ammo.

[belizejet]

Just thought I would let everyone know I'm getting sub MOA groups at 265 yards so far with my 6.5 creedmoore build and all 60 rounds I put through it have been suppressed. No failures. Runs great so far. I've only been using factory 120grn AMax. I want to load some other stuff now that I have once fired brass. I need to stretch it out further also.

[roberth]

I have handled a couple of PA-10's. Not impressed, seems to be cheaply done and I noticed on one that is unfired the bolt is sticky on the barrel lugs.

Pony up the extra glue for the M&P 10.

Thanks!

I've been looking at assembling my own after shooting an SR-25 the other day. Pricewise I can't beat an M&P 10. The Mega upper/ Mega lower/Shilen barrel (no handguard, buttstock, parts kit, BCG) would run over $1100 if I built my own.

[DireWolf]

Thanks!

I've been looking at assembling my own after shooting an SR-25 the other day. Pricewise I can't beat an M&P 10. The Mega upper/ Mega lower/Shilen barrel (no handguard, buttstock, parts kit, BCG) would run over $1100 if I built my own.
Yeah, but the Mega setups kick ass - they look great, lightweight, great finish, tight tolerances, etc...

I've been giving serious thought to starting a new project with a single Mega Ambi lower SBR'd and a pair of matching Mega uppers for it, one a 12.5" 308, the other a 22" 6.5CM....

Sent from my SM-N910T using Tapatalk

[belizejet]

New development. I bought an M5 Aero Precision "enhanced" LPK when I built this rifle about five months ago. I put 160 rounds through it and today the bolt catch/release broke on the last round. This was kind of a spendy LPK for AR-308's. Has anyone ever had this happen before? 64780

[Frac]

New development. I bought an M5 Aero Precision "enhanced" LPK when I built this rifle about five months ago. I put 160 rounds through it and today the bolt catch/release broke on the last round. This was kind of a spendy LPK for AR-308's. Has anyone ever had this happen before?
I haven't had it happen, but I have seen a handful of cases posted where the Aero bolt catch broke.

[belizejet]

I broke a second bolt catch. Turns out using a .308 buffer and .308 buffer spring with the suppressed 6.5Creedmore upper was causing the spring to get too much tension because of the neck on the .308 buffer. Switching the buffer with a no neck AR-15 buffer in the same weight fixed it so it has less recoil, easier charging, and hopefully no more breaking of bolt catches.

[Frac]

Thanks for posting back. I hope that fixes it. I'm not following you on the "neck" of the buffers. Are you running a rifle extension or carbine extension?

[belizejet]

Rifle A2 tube. The 308 buffer has a neck/ring where the spring sits that is not against the buffer head like a carbine buffer. I'm not great at knowing different sizes and weigh combinations but the new buffer I'm trying weighs the same but is shorter. The old 308 buffer had and inch or two of tension on the spring just sitting in the tube not even being charged back. This more tension was needed to charge or cycle the rifle thus causing more forward force on the bolt and shearing the bolt catch. That my theory anyway.

[belizejet]

http://uploads.tapatalk-cdn.com/20160507/f04d86bf2da896bccb6c4780265e4df8.jpg

Here is the 308 buffer. See the lower ring? That's where the spring was before.

[Frac]

Ok, I follow you now. Thanks for the pictures. The overall length of the AR-15 rifle buffer longer, right? Can you get the bolt to hold open when you use the AR-15 rifle buffer?

Be careful not to go too short, either. I have seen pictures of the damage when the carrier impacts the receiver extension threads at the back of the receiver.

[belizejet]

The AR-15 buffer is shorter than the one pictured and the spring seats at the far end, not on a ring 2inches down. The one shown is the AR-10 buffer. I'm basically using a shorter buffer with the same weight instead of the pictured buffer.

[Grant H.]

Sounds like your bolt catches are made very poorly. I like a lot of Aero's stuff, but after 2 have broken, I wouldn't be putting any more in.

I've never had a bolt catch break using the appropriate rifle buffer in a .308 A2 configuration.

Are you saying you put a carbine style buffer in your rifle with the A2 tube still?

Looks like this?

http://media.midwayusa.com/productimages/880x660/Primary/553/553144.jpg

If so, that is a bad idea. The shorter buffer will allow the larger diameter of the body of the bolt carrier to impact the threaded portion of the lower receiver, which can cause damage to the threads, and eventually can cause the lower receiver to crack at the base of the buffer tube hole.

I bought a DPMS from a guy that had put a carbine buffer in an A2 rifle buffer tube, and the carrier had dug into the buffer tube threads about a 1/4 of an inch.

It's your gun, do as you wish, but understand that they are designed with that buffer for the rifle A2 tube for a reason.

[brutal]

Let me know what you find. I was in a discussion about this yesterday afternoon. I was told by a very good authority that the 25s would fit and the 20s wouldn't, but this only applied specifically to M118LR spec ammo.

Tripped across this thread again so I checked. The M118LR I have here, headstamp 09, just fits the LR20 PMAG. Just. Barely.

[brutal]

Sounds like your bolt catches are made very poorly. I like a lot of Aero's stuff, but after 2 have broken, I wouldn't be putting any more in.

I've never had a bolt catch break using the appropriate rifle buffer in a .308 A2 configuration.

Are you saying you put a carbine style buffer in your rifle with the A2 tube still?

Looks like this?

http://media.midwayusa.com/productimages/880x660/Primary/553/553144.jpg

If so, that is a bad idea. The shorter buffer will allow the larger diameter of the body of the bolt carrier to impact the threaded portion of the lower receiver, which can cause damage to the threads, and eventually can cause the lower receiver to crack at the base of the buffer tube hole.

I bought a DPMS from a guy that had put a carbine buffer in an A2 rifle buffer tube, and the carrier had dug into the buffer tube threads about a 1/4 of an inch.

It's your gun, do as you wish, but understand that they are designed with that buffer for the rifle A2 tube for a reason.

My first Sig 716P carrier made contact with the lower receiver and took some pretty good chunks out of it. Issue arose once I started shooting it suppressed.

They replaced the complete rifle.

Sig redesigned the platform and now uses uses a flat sprint, H2 buffer, redesigned BCG and bolt (2 ejectors), and has cutouts in the lower. However, I've pressed the BCG all the way back and the bearing surface is not really even close to the lower now.

[belizejet]

Even if they are the same weight? You are talking about the threaded portion where the buffer tube screws in, correct? One was Aero and one was DPMS. What do you suggest for a bolt catch? Are you sure the guy didn't use an AR-15 spring also? The only thing different in my set up is the length of the buffer. I guess I don't get it because no matter what buffer you use the bolt carrier is going back into the buffer tube. The buffers are the same diameter. I'm sure the lip on the .308 buffer serves a purpose but I'm not sure what for. I'll do some more research. Maybe because all my rounds are suppressed? It was very hard to charge before I switched the buffer out. It almost took two hands. I'm
Pretty sure it was because the spring was already compressed a bit in the bolt forward position and thus had maximum forward spring on the cycle to smash forward toward the bolt catch. Thanks for the heads up and I'll look at it. I got the idea from a guy who has been doing it in a .308 AR for a while. Maybe it's the 7.5 Creedmore vs .308?

[brutal]

However, I've pressed the BCG all the way back and the bearing surface is not really even close to the lower now.


Even if they are the same weight? You are talking about the threaded portion where the buffer tube screws in, correct? One was Aero and one was DPMS. What do you suggest for a bolt catch? Are you sure the guy didn't use an AR-15 spring also? The only thing different in my set up is the length of the buffer. I guess I don't get it because no matter what buffer you use the bolt carrier is going back into the buffer tube. The buffers are the same diameter. I'm sure the lip on the .308 buffer serves a purpose but I'm not sure what for. I'll do some more research. Maybe because all my rounds are suppressed? It was very hard to charge before I switched the buffer out. It almost took two hands. I'm
Pretty sure it was because the spring was already compressed a bit in the bolt forward position and thus had maximum forward spring on the cycle to smash forward toward the bolt catch. Thanks for the heads up and I'll look at it. I got the idea from a guy who has been doing it in a .308 AR for a while. Maybe it's the 7.5 Creedmore vs .308?

I'm guessing your question was addressed to Grant H.

However, I will suggest that you check how far your BCG will go into the buffer tube with the spring/buffer you have installed. If you're using a carbine tube, you would have a carbine spring and bufffer - although tuned for your rifle. An A2 rifle length tube should have a rifle spring/buffer tuned for your rifle.

BCG's only go in about half way. The front half of the BCG on a .308 is larger in diameter than the rear (that fits a standard AR-15 buffer tube) and as Grant H. said, it will contact your lower if not "bottoming out" on the buffer/spring combo. If that bearing surface contacts the lower, you're gonna break shit.

Here's a pic of my damaged Sig lower before it was replaced.

65327

[belizejet]

I get it now. Much better explanation. I wish I had another AR-10 in 6.5 Creedmore to compare it too. I feel like I started from scratch in building my first AR-10 in 6.5.