Colt Model O1911 WWI Reproduction .45 ACP, Carbonia Blue Custom Shop, 5-inch, 2004, WMK-Suffix Series
This Colt Model O1911 WWI Reproduction is a limited Custom Shop run from 2004 with an authentic Carbonia blue finish. Built to replicate the early U.S. Army M1911, it carries the WMK serial-suffix series and period-correct markings. With approximately 4,000 produced, this full-size .45 ACP combines collectible significance with faithful, early-configuration details.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Good - Clean, well-maintained, minor wear marks.
Bore Rifling: Good Rifling - Intact, well-defined lands and grooves.
Specific Condition Notes: There is rust and pitting on the front of the grip and in the slide serrations.
What's Included
- Colt Model O1911 WWI Reproduction pistol
- Two 7-round steel single-stack magazines (mix of witness-hole and solid-body styles as shown)
This WWI Reproduction is part of Colt’s Custom Shop Carbonia blue finish run, identified by the WMK serial-suffix series honoring Colt CEO Lt. Gen. William M. Keys. Production was limited to approximately 4,000 units, adding clear scarcity to an already sought-after configuration.
It closely mirrors the early 1911 pattern: no A1 relief cuts, a long smooth trigger, a wide spur hammer, a flat mainspring housing with lanyard loop, an un-lowered ejection port, and vertical rear cocking serrations. The slide and frame carry period-correct rollmarks, including "MODEL OF 1911. U.S. ARMY" on the slide and "UNITED STATES PROPERTY" on the frame.
The pistol uses carbon steel for the slide, frame, and barrel, finished in authentic Carbonia blue. It is a full-size 5-inch gun with a 7+1 capacity. Fixed GI sights include a half-moon front blade and a small U-notch rear, with an approximate 6.5-inch sight radius. Double-diamond checkered walnut grip panels complete the early-service look.
Functionally, it follows the original single-action, short-recoil tilting-barrel design with a grip safety. The long, smooth trigger and wide spur hammer reflect the early 1911 feature set and contribute to its faithful reproduction profile.