Wilson Combat 45 Caliber ACP 7 Round Stainless Steel Magazine is made from heat-treated, 17-7, aircraft-grade stainless steel to stand up to the demands of competitive and defensive shooting. Precision-formed bodies are built to very close tolerances for excellent, universal fit. Exclusive, molded, self-lubricating follower ensures reliable feeding and slide stop operation. Extra-power Wolff spring resists spring set. Removable base, spring, and follower for fast, easy cleaning. Black models have black, oxide finish and removable steel base pad. Check out the 360° Image of the Wilson Combat 1911 Auto Magazine. SPECS: 17-7 Stainless steel. 1911 Auto and Officers ACP models have bright, stainless steel finish with black polymer base pad.