THE ULTIMATE GUIDE TO RUGER SR45 FOR SALE

I am also experimenting with modifying some M&P mags and CZ mags to work with in the carbine. You will need to cut the notch while in the entrance of your mag so it'll lock in. I don't very own any Glocks.I would use Glock branded magazines and not another copies. Many others are available like Magpul. You could possibly test some and see for yours