[Red Steel]

Some piston ARs have trouble running steel cased ammo.

[Ronald_Magnus]

“Some piston ARs have trouble running steel cased ammo.”

Why is that? Trouble with extraction?

I bought a Huldra Mark IV 5.45x39 Carbine Base Rifle with the piston system from http://www.fleetfarm.com/detail/huldra-mark-iv-5-45x39-carbine-base-rifle/0000000069728

I bought it because I have a lot of commie 5.45x39 steel cased, corrosive primer ammo.

I haven’t had a chance to shoot it yet.