CMC Products Match Grade Magazine, 45ACP, 7 Rounds, Fits Officer Size 1911, Stainless M-MG-45CP7 The Match Grade 1911 magazine from CMC 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 Match Grade mag features a welded base plate for the ultimate in durability.