The CM Products Match Grade 1911 magazine is a traditional USGI-style fixed base magazine with improvements in follower design, feed lip geometry, and materials. Match grade die-controlled tolerances are held to +/- .001" which is more than 75% tighter than magazines made to typical military specifications. Springs are made from aerospace-grade rocket wire and large viewing holes are numbered to quickly determine round count at a glance. The stainless steel magazine features a welded base plate for the ultimate in durability, drilled for base pad. FeaturesImproved Tolerance Stainless Steel USGI Style Tube with Enhanced Feed LipsLaser Welded TubeNumbered Witness Holes for Visual Round CountStainless Steel Follower with Heavy-Duty Spring for Long-Lasting Tension and DurabilityHigh Tensile Rocket Wire SpringWelded Base Plate for the Ultimate in DurabilityFlush Fit for Minimal Bulk and Easy ConcealmentSmooth Finish for Easy Insertion / RemovalLong-Lasting Function in Dirty Environm...