Promag manufacturers designed this magazine for the AR-15, 9mm SMG configuration carbine.
The maximum capacity for this magazine is (32) rounds. Will only hold 9mm Luger caliber rounds. Constructed of DuPont Zytel polymer with a black finish, embedded with a hi-tensile compression spring to assure a smooth transition between the magazine and chamber.
One characteristic about Promags reputation is the process and dedication that goes into their manufacturing process and that has held true since their conception. This dedication to only turning up superior and dependable products for whatever occasion, has kept their integerty strong and reputation solid for many years.
If you have an AR-15 that has been configured with the SMG Carbine conversion kit, then this is the right magazine for you!