I got a 9mm barrel for $99, the rest of the parts I already had from a 7.62X25 blowback build -- except a magblock. I want to keep this dirt cheap -- anybody know if the Promag Colt style magblock works? I know Promag has a bad name but the magblock actually looks OK even though it's part plastic. I was wondering if anybody had actually tried one?
The picture below is the one I'm talking about.
The 9mm setup is actually for a switch barrel setup so I can go from 9mm to 7.62X25 by switching barrels and magblocks.