Any subgun users here?

[Caseless]

I rarely use the pistol caliber carbines. So I am curious if a blowback subgun originally designed for FA use has the same issue like in the pic below.

[Steve1968LS2]

I love my HK MP5 clone.. fires so softly.. great gun.. same with my UMP clone..

No issues like above.. The UMP is a real tack driver, never any sort of failure.

[stryper]

What he said ^^^^^

[sigstroker]

Those are closed bolt, the typical subgun is open bolt. While I've never seen crappy ammo like that pictured being fired in my friend's MAC, it's unlikely it would look like that. Instead of the primers being blown out like that, the fixed firing pin of an open bolt subgun makes a bigger than normal dent in the primers.

[luchador768]

I have two Masterpiece Arms pistols that do that when bump fired. The Uzi clone has no issues. The .45 Masterpiece has had issues with blown cases, I'm not really sure why. The 9mm runs like a sewing machine!

[Caseless]

Thanks for the feedback. I guess I have to stop using European ammo with hard primers in the JRC. Light primer strikes start happening after 30+ rds of rapid fire.