The MecGar 1911 45ACP magazine is a standard factory replacement magazine. This magazine is for A-2 1911 models chambered in .45 ACP and holds 10 rounds of ammunition. It is made of steel and is made to Armscor/Rock Island Armory specifications and tolerances, using the same manufacturing and materials as the original equipment magazines, ensuring perfect fit and operation.Features : Steel Magazine Body_x000D_ Polymer Base Plate_x000D_ Perfect Fit and Operation