The Glock 31 magazine (calibre 357 SIG) is a composite steel and polymer fabrication. The Glock magazine encases a toughened and hardened steel insert in Polymer 2. This steel insert protects the magazine lips. Invented by Gaston Glock himself, Polymer 2 is a high strength nylon based polymer. As a result, this polymer makes the Glock Magazine incredibly durable.
Polymer 2 is more resilient than steel. Consequently this composite magazine assembly can withstand a lot of abuse and still continue functioning. Especially relevant is that the Glock magazine will withstand visible damage or deformation after being dropped on solid floors from serious height.
Reliable Ammunition Feeding:
The Glock 31 magazine spring is made from selected and expertly heat treated steels. As a result of the accurately manufactured spring and follower, the Glock Magazine feeds ammunition with total reliability. The magazine body has twin cuts. Due to this the Glock 31 Magazine is compatible with all Glock Gen 4 semi auto pistols with the magazine catch in left or right handed configuration. Glock 31 calibre 357 SIG
GLOCK 31 Magazine features
• Composite fabrication of toughened steel and Glock Polymer 2.
• Viewing ports for visual confirmation of loaded rounds
• High capacity twin-stack design
• Heat treated steel magazine spring
• Shock absorbing Glock Polymer 2 base plate
The GLOCK 31 magazine compatible with: G32 G33