I am also experimenting with modifying some M&P mags and CZ mags to make use of from the carbine. You need to Lower the notch inside the front on the mag so it can lock in. I do not individual any Glocks. I'd use Glock branded Publications and never the https://devinsdfca.qodsblog.com/32178658/5-essential-elements-for-ruger-sr45-for-sale