gunsmoke50

Update: Completed build. Required a DPMS bolt catch threaded pin. Also had to Dremel down the front part of the PMAG to clear the insertion stops. Have yet to test it on the range

He all, A page on the Armalite website directs you here, for parts: https://everygunpart.com/ I ordered a couple AR-10B mags from here, arrived quickly.

Update: I ordered a Larue 7.62 lower parts kit, which arrived promptly. The Larue kit came with a pivot in that was the right length and shape, but was too large in diameter to pass through the hole in the upper receiver! I chucked up the pivot pin in a drill press, and used sandpaper to slim it down. It fits snugly now. the Larue LPK also came with a bolt catch that functions, but came with a roll pin instead of a threaded pin. All I could find online were DPMS style threaded pins, so I ordered a couple, and hopefully they'll fit when they arrive. Now, the really annoying part: magazines. As I stated I'm my original post, the LR-308 style PMAG fit snugly in the mag well, but the AR-10B style over-insertion stops in the Noveske upper receiver prevent the PMAG from locking in. When the Armalite AR-10B pattern mags I ordered arrived, they would not even fit in the mag well. now I have four AR-10B mags that are basically paperweights. It looks like the next logical step is to either modify the PMAG to fit, or to try and cut the over-insertion stops out of the upper receiver. Since the PMAG is cheaper and made of plastic, I think I'll start there. To summarize: screw this lower. Unholy mishmash of patterns. The lower mates perfectly with the Noveske N6 gen 1 upper, but the mag well takes LR-308 pattern magazines, which are incompatible with the N6 upper's over-insertion stops. While SMOS Arms is defunct, Stubborn Mule Manufacturing is still going, but they haven't responded to my e-mails.

After checking, it looks like the mag catch is an AR-10A pattern, since it has the semicircular front on the boss. My upper is a Noveske, and it has the over-insertion tabs built in. Looks like Armalite pattern mags for me. The bolt catch is still a puzzle. It looks like a 10B pattern, but the bolt won't cycle at all while the catch is in place. I guess I'll have to try the Larue when it comes in.

I bought an Armalite match trigger set, it came with the mag release. Fits pretty good in the lower, and functions to hold the PMAG in properly. Just holds the mag too deep in the well. Any other manufacturers for 10B pattern mags, other than Armalite? I see that Larue makes 20 rounders, but they most likely won't ship to my state.

Greetings builders, I posted here several years back seeking advice on parts for the SMOS GFY-10 lower I bought. Just finally got around to putting it together (life happens), and I mostly have it together, except for a few issues: 1) the front pivot pin I have (Armalite lower parts kit) doesn't even come close to working. What brand do I need? 2)I have a 308 PMAG that fits snugly in the mag well, locks up solidly, but is WAAAY too tall. Receiver halves won't close. Which brand/pattern mags should I be using? Should I just Dremel the PMAG catch indent till it works? 3) Armalite bolt catch is waaay too tall, so much that the bolt carrier won't cycle. Also the GFY-10 lower uses a screw to secure it, not the roll pin I have. I have a Noveske lower parts kit on the way, but I'm not sure if their current LPK is compatible, since Noveske changed their lower pattern IIRC. PMAG way too tall Is this made for an HK style friction pin or something? Or do I need a cross-bolt, like on the old Colt Sporter lowers?

Thanks for the confirmation!

New member here, I bought a SMOS Arms GFY-10 lower reciever last year in a rush (New laws here in CA). After determining that it was Armalite pattern and similar to the Noveske N6 pattern recievers, I started sourcing parts. So far, I have the SMOS arms lower, a blem Armalite pattern Noveske N6 upper, an Armalite pattern handguard (bought from Noveske). I'm trying to get a barrel, bolt, and bolt carrier group together, but parts are scarce. I'm considering buying the barrel, bolt, and bolt carrier from Noveske when they get in stock, but after talking on the phone with them, I discovered that Noveske has switched to DPMS pattern on their new parts. The sales guy at Noveske is under the impression that the bolt, bolt carrier, and barrel will still work in the older Armalite pattern uppers and lowers, but i wanted to get opinions from those who have actually built 308 ARs from parts. Is it feasible?

Greetings from behind the lines in Northern California, I'm a Stationary Engineer by trade, and a former Marine. I've built a few AR15s, and I've been a M1A/M14 aficianado for many years. I bought a 308 AR receiver last year in a rush, and have slowly been getting the parts together for the build. I have some questions, which I will post in the appropriate forums.