This Kimber 1911 replacement magazine is a factory original from Kimber. Factory replacement parts are manufactured to the exact same specifications and tolerances and use the same manufacturing materials as the original parts which guarantees excellent fit and reliable operation. Keeping a few extra factory magazines around is never a bad idea; extra magazines save loading time at the range and also serve as a backup for those days when you simply cannot remember where you put your primary magazine. Notes: Stainless steel 10-round magazine for 1911 .45 ACP pistols features full-length grip. Offering increased capacity in a single stack, this magazine does not fit flush and extends beyond the bottom of the frame.