None of 'em were very successful and I'd steer clear, personally. I've heard Auto Mag 2s are going for 600 or better and I wouldn't have had one at 200 when they were new, personally. Don't know much about the Grendel. I have a P12, .380 that is a decent pocket gun, but never messed with the .22 mag. I don't see the point, anyway, in a pistol firing .22 mag. Ammo cost nearly as much as factory 9mm which is actually useful for defense. If I really wanted a .22 mag in a handgun, I reckon I'd get me a Ruger Single Six.
