Produced as part of the serial number block reserved for the Springfield Armory. Blade front and flat top notch rear sights The two-block Colt patent and Springfield address markings are on the left side of the slide ahead of the ordnance bomb symbol. The eagle with shield motif and "MODEL OF 1911.U.S.ARMY." are on the right. The ordnance bomb is repeated on the frame with "UNITED STATES PROPERTY" ahead of the slide stop and the serial number on the right. The full blued barrel is marked "S" on the left of the lug. Fitted with a unique replacement wide knurled hammer marked "C3839-", short grip safety, long trigger, flat mainspring housing and lanyard staples on the housing and correct Springfield produced loop magazine. Includes a Rock Island Arsenal leather magazine pouch with two extra Springfield magazines, one with loop, one without.