The CM Products Match Grade 1911 Magazine is a traditional USGI-style 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 wire and large viewing holes are numbered to quickly determine round count at a glance. The stainless steel MATCH GRADE features a welded base plate for the ultimate in durability. 7-rd capacity, 45ACP Caliber only- Improved-tolerance stainless steel USGI style tube with enhanced feed lips and follower- Metal follower and heavy duty spring for long-lasting tension and durability.