Premium 1911 magazines from Mec-Gar, one of the top names in manufacturing magazines. Holds 8 rounds of .45 ACP. Black finish.Caliber .45 - Capacity 8 High Cap - Increased capacity of 8-rounds - Carbon Steel or 17-7 PH Stainless Steel tube - Internal components are linked together to offer easy disassembly and reassembly - Lubricated nylon polymer follower with metal insert where the slide stop activates properly aligns all types of ammunition for the most reliable feeding. - Spring is manufactured from higher tensile music wire with a drawn phosphate coating for easier coiling properties and longer service life - Redesigned high impact polymer removable butt-plate is tapered to fit funneled mag wells