This product has the following fits: - All 1911 style pistols fits .45 caliber with 5in. barrel (with or without rail) - The Tactical Series is an active retention holster. To un-holster your firearm unfasten the safety strap and rock the firearm back approximately one half on an inch followed by a deliberate upward motion. When re-holstering your firearm insert the barrel first into the muzzle stud snap the firearm into the holster and refasten the safety strap.