The Promag AR-15 SMG 9mm magazine holds 32 rounds and is built from heat-treated steel with a black oxide finish. It features an injection-molded follower and a heat-treated chrome silicon wire spring for durability. Made in the USA, it ensures reliable performance for 9mm carbines. Product Features 32-round magazine Fits AR-15 SMG 9mm carbines Magazine body constructed of heat treated steel with a black oxide finish Injection molded magazine follower Magazine spring formed from heat treated chrome silicon wire Made in USA Product Specifications Manufacturer: Promag Model: AR-15 SMG Type Caliber: 9mm Magazine Capacity: 32 Rounds