Custom AR in 7.62x39 setups? Pros, Cons?

[buffalobo]

Sounds like you already spent money for Smith to fix issues that would normally not arise. The hassle of not having use of a firearm cause it has to be fixed also carries an opportunity cost.

[cstone]

.300 blackout is a LOT more expensive than steel case Russian 7.62x39....

Less expensive if you reload.

[Hoser]

.300 blackout is a LOT more expensive than steel case Russian 7.62x39....

Not if you reload.

And you dont have to worry about corrosive ammo.

[jenznat0r]

Maybe when I’m out of college and have a house, I’ll consider some reloading equipment. The ammo I currently use is non-corrosive.

[stevew]

I have a couple of 7.62x39 uppers to play with steel cased ammo. Had issues with one and was told to use the oring under the extractor to change the timing a bit and after that and finding the right mags to work I really like the extra thump it seems to have over the normal 55gr 556 rounds I shoot. They have been solid since I got them running right.

[The Extractor]

I built a franken gun out of an mgi hydra AK magwell , an 80% lower, and a youngs hd bolt with more meat around it so it doesnt break, dpms low pro slick upper milled to fit the mags and a KAK mid length barrel 18" ?
It ran a couple 10rd mags just fine.

[Great-Kazoo]

I built a franken gun out of an mgi hydra AK magwell , an 80% lower, and a youngs hd bolt with more meat around it so it doesnt break, dpms low pro slick upper milled to fit the mags and a KAK mid length barrel 18" ?
It ran a couple 10rd mags just fine.

CPD mags for the win
https://www.joeboboutfitters.com/C-P...762x39-mag.htm

[jreifsch80]

300 blackout will be the same price as 7.62x39 once all the distributors get stocked up

https://www.targetsportsusa.com/wolf...-p-110259.aspx

[The Extractor]

I wanted it to take AK mags and I guess I wanted a challenge. The x39 std AR mags are unreliable form what I read.

[jenznat0r]

I wanted it to take AK mags and I guess I wanted a challenge. The x39 std AR mags are unreliable form what I read.

Not the ones I've used from C-Products Defense. I hear the 10 round ones are even more reliable because they lack the straight down and bend design the AR is forced to use. Honestly? In the standard AR upper/lower configuration, get yourself a Black Rifle Arms or Fail Zero Nickel Boron bolt and all the reliability issues disappear. The bolt is literally the make-or-break issue in this setup, so spend the extra and get it to work work right.

Not related, but I have something called a "Kali Key" mated to my original bolt done by a gunsmith here. I rarely use it but sometimes I put it in to try it out. I use steel case ammo. Does anyone know why when I fire from a single shot with the Kali Key, the bolt refuses to retract for awhile? Is it the steel case expanding in the chamber?