ProMag Sig Sauer P320 Magazine, 9mm, 17 Rounds, Blue Steel Md: SIG-A8
The ProMag 17 Round magazine for the Sig Sauer P320 pistol in 9mm. Constructed from heat-treated blued-steel, with a follower, lock-plate, and base-plate molded from a proprietary DuPont Zytel based black polymer; and using a spring wound from Chrome-silicon wire and heat-treated for strength and reliability.
