Capacity: 20 rounds; For the Beretta M92/M9 pistol in 9mm; Has an o/a length of 6.5″; Constructed from heat-treated blued-steel; Follower, lock-plate, and base-plate molded from a proprietary DuPont Zytel based black polymer; Molded sleeve to fill the gap between the bottom of the grip-frame and the magazine base-plate; Spring wound from Chrome-silicon wire and heat-treated; Blue Finish; Made in the U.S.A.; Limited Lifetime Warranty