The Promag Smith & Wesson M&P Compact .40 10 Round Blue Steel Magazine is a handy accessory for your firearm. It offers heat-treated blued-steel construction and a chrome-silicon wire spring. It features a proprietary DuPont Zytel based black polymer follower and holds 10 rounds. Constructed from heat-treated blued-steel Follower, lock-plate, and base-plate molded from a proprietary DuPont Zytel based black polymer Spring wound from Chrome-silicon wire and heat-treated for strength and reliability Compatible with Smith & Wesson M&P Compact .40 10 Round capacity
