ProMag has grown to become one of the largest US-based magazine manufacturers since they got their start in 1978. This 13 round Glock magazine is made right here in the U.S.A. by American workers. The magazine is constructed of ProMag's proprietary Dupont Zytel derived high impact polymer to give a long service life in the toughest conditions, with a steel insert that prevents feed lip distortion for added durability to the feed lips. For added reliability, ProMag also included a chrome silicon spring that resists taking a set no matter how long you leave the magazine loaded.

Features and Specifications:
This is not a Glock Factory Magazine, it is an after market Magazine
Manufacturer Number: GLK-A11
ProMag For Glock 23 Magazine
Caliber: .40 Smith & Wesson (will work with .357 Sig also)
Capacity: 13 Rounds
Body Material: DuPont Zytel High Impact Polymer
Spring Material: Chrome silicone wire
Follower Material: DuPont Zytel Polymer
Baseplate Material: DuPont Zytel Polymer
Weight: 2.5 oz
Finish: Black

Fits:
Glock 23
Glock 27
Glock 32
Glock 33