It’s great to have your son participate in the builds. Keep the builds coming.

For me personally, I've had the best luck "pistoling" lol with a 2 point sling cinched around the weak hand and pushed forward against the sling, makes a world of difference on follow up shots with my M92.

For the Radical Firearms upper, if you haven't, it might be worth giving it a once over with some loctite. I just went over a friends 5.56 pistol, the gas block and rail had rattled loose after a about 700 rounds. Have fun and hope it all works out well for you.

Get yourself a KAK shockwave brace, you'll love it.

I like your work and I usually mind my own business but... It's wonderful that you get your children involved in your projects. I have to ad that you are very brave to allow comments on your KZfaq submissions that your kids are in. Is it the best idea? Comments can get beyond cruel.

Hey there, let me first state that i'm a huge fan - you're totally the reason I got into building AK's back in the day, especially with the Toth Tools, I used your step by step videos to help me build my first AK!! I even uploaded some vids of my own just for fun. Anyhow, I have quite a bit of experience with these x39 AR builds. I have found that Hardened Arms 16" 7.62x39 uppers work amazing! I have one on a Rock River standard lower receiver. I have used both the Cproducts and ASC magazines in that build and several others. I have found that both 30 round, 'AK style' magazines work well. What i have found that DOES NOT work well, is the Cproducts 10 rounders. I cannot get them to work at all with more than 5 or 6 rounds in the magazine. I built my own little 10" x39 upper, and that wouldn't feed from any of the above-listed mags - and I just couldn't get it to ever run reliably. I wonder if these x39 pistol builds don't have enough gas port pressure? Not sure, just throwing that out there...

i bought 2 complete RF's 7.62x39 - 16'\" bbl.'s uppers and they been very good so far with ASC mags. really can't beat the price.

I've seen the 7.62 pistol uppers on sale for $150

I have a 7.62x36 ar rifle with a 16" barrel. I use the ASC mags, I have 5 of them that work perfectly fine. One that I bought did not feed properly at all and had to be returned though. They are definitely hit or miss... Nice looking pistol though!

Drill the gas port to 7/64ths polish the feed ramps. Remove the vertical bead on the magazine near feed lips, file from end of mag slightly and wolf extra power hammer spring .

on all my builds during breakin i lube the hell out of the bolt. I have had about 6 rifles out of the dozen+ i have build need to be lubed to hell shot a few times, broken down then cleaned and standard lubed. this seems to be more prominent with "budget" parts, but not exclusive. After initial breakin they seem to wear any metal together and function perfectly. this includes a 7.62x39 rifle with all PSA parts and upper.

Are you running it dry???

Any reason you didn't use a PSA KS-47 lower? I know you have AK mags and this eliminates one of the issues with reliability.

looks like the problem could be limp wristing

I build 3 ARD (AR15DEPOT.COM) 7.62X39 rifles base on 80% lowers16" 7.5" and18" stainless . the only problems i had where magazines. I had to put a lot of work in to the mags. The 10rnd mags where great but the 20 and 30rnd gave me problems. I get 1-2" groups from the 16" and the 18". and i get consistant hits on a 12" steel plate at 650 yards with GT AMMO. Wolf ammo is good only to 500 -550.

Seomeone seems to be lackadaisical. =P

I know I'll catch some crap for saying this but this is why 7.62x39 AR's are stupid.