MEC-GAR SIG PRO 2009/2022 17 RND AR15 they have only 31 witness

they have only 31 witness holes

while giving you a 50% increase in magazine capacity in the same overall footprint

and simple tool-less disassembly to ease cleaning

This is a high strength nylon-based polymer

increasing feeding reliability and ease when loading

MEC-GAR SIG PRO 2009/2022 17 RND AR15 they have only 31 witnessCompatible Firearms: SIG SAUER PRO 2009, 2022 Caliber: 9mm Capacity: 17 rounds Coating: Anti Friction Follower: High impact polymer Tube: Heat treated carbon steel Spring: High tensile music wire Floorplate: High impact polymer +2 floorplate Anti Friction coating allows for easy loading, reduced malfunctions, and superior anti corrosion properties If you are looking for a magazine for your SIG SAUER PRO 2009, 2022 pistol, choose the magazine