CMC Products Classic 10mm full size 1911 magazine is a traditional flush fit GI-style with all new materials and follower designed for durability and reliability. Laser welded stainless steel magazine tube with welded base plate, drilled for optional polymer base pad (Sold Separately). The Classic 10mm magazine includes witness holes to allow for a visual round count, and an extra power spring for long lasting tension and durability. 10mm Caliber Fits All Full-Size (Government Model) 1911 Handguns 9 Round Capacity Smooth finish for easy insertion and removal, and flush fit for minimal bulk and easy concealment. Mfg: Chip Mccormick Custom