The low-profile steel base pad on this Full-Size .45 ACP 8 round 47D series magazine increases concealability and drop resistance during hard use. Features: Caliber: .45 ACP Capacity: 8 rounds 1911 Size: Full size Increases reliability in all 1911 pistols Aircraft grade certified stainless steel tube resists corrosion Thickest tube wall in the industry at .025" Tubes are heat treated for maximum durability and service life Fiber infused nylon follower provides smooth round feeding Maximum tensile strength heavy-duty spring for long service life, enhanced feeding, and positive slide stop operation Removable .170" low-profile steel base pad for easy maintenance No other magazine on the market can compare for proven inherent reliability, durability, and the ability to remain loaded for long periods of time without damage