I had the opportunity to fire my Glock .45 cal. with the new 10 round magazines which I purchased from the Magshack. I utilized all three magazines at full capacity and performance was flawless.

Glock 21 .45 ACP 10 Round Gen 4 Magazine

This magazine arrived as expected and in good condition.

This appears to be an OEM magazine & works well with the weapon. I haven't yet taken it to the range, but all other basic functions are fine: e.g. locks in securely, feeds ammo fine when manually cycling the weapon, follower engages the slide stop, drops easily from the mag release, etc.

I live in Illinois, which might soon pass a ban on so-called "high capacity" magazines (having capacity > 10 rounds). So, I'm getting (at least) one 10-rnd mag per weapon for temporary compliance until the law is challenged & struck down for being unconstitutional.

GREAT ARRIVED ON TIME

Glock brand 10 round mags work perfectly.