CM Products Classic .45 ACP Pistol Magazine. 45 ACP Full-Size 1911 magazine in the 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). Specifications for Chip McCormick Classic .45 ACP 8 Rounds Pistol Magazine: Manufacturer: Chip McCormick Gun Make: Colt Gun Model: 1911 Caliber: .45 ACP Magazine Capacity: 8 Round Fabric/Material: Stainless Steel Features of Chip McCormick Classic .45 ACP Pistol Magazine .45 ACP Caliber Fits All Full-Size (Government Model) 1911 Handguns Steel USGI Style Tube Laser Welded Tube Witness Holes for Visual Round Count Steel Follower Extra Power Spring for Long-Lasting Tension and Durability Welded Base Plate for the Ultimate in Durability Flush Fit for Minimal Bulk and Easy Concealment Drilled for Base Pad (Sold Separately) Smooth Finish for Easy Insertion / Removal Long-Lasting Function in Dirty Environments CM's 100percent Satisfaction Guarantee Package Contents: Chip McCormick Classic .45 ACP 8 Rounds Pistol Magazine What firearm models does the manufacturer say Chip McCormick Classic .45 ACP 8 Rounds Pistol Magazine is compatible with? The manufacturer says that Chip McCormick Classic .45 ACP 8 Rounds Pistol Magazine is compatible with 1911Chip McCormick Custom 14311 1911 Shooting Star Classic 45 ACP 8 Round Blue Finish