7.62 x 39 upper question

[fjruple]

I found that I had to put an extra power hammer spring into mine due to light primer strikes on the military Russian 7.62x39mm cartridges.

--fjruple

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[browningautorifle]

an extra power hammer spring

That could easily be a fact...

[MikieG]

I built a midlength gas length, 16", piston driven rifle. To get it to run wslmart tula ammo, i did the following...
1 opened gas port to .125".
2 used the light weight Adams Arms BCG
3 chose MGI HYDRA super bolt
4 installed Wolf extra power hammer spring
5 used LWRCI adjustable recoil spring anf Lwrci buffer piston.
Rifle runs all x39 mag mfgs mags reliably.
I am very happy with rifle.

[m1903rifle]

Just get a 300 AAC upper and forget the 7.62X39. Not a lot of difference down range and you can use the regular AR-15 mags.

[browningautorifle]

get a 300 AAC upper and forget the 7.62X39.

With the ammo availability in the US, I'd agree. Here in Canada though, we still have to make 300 to make it affordable.