Colt Govt Model MK IV 70 .45 ACP Nickel 5″ Semi-Auto Pistol

SOLD FOR: $1,025.00

LSB#: WY250408GF055

Make: Colt

Model: Government Model MK IV Series 70

Serial Number: 33946G70

Year of Manufacture: 1977  

Caliber: .45 ACP  

Action Type: Semi-Automatic, Single Action, Fed by Detachable Magazines

Markings:  The left side of the slide is marked “COLT’S MK IV / SERIES 70 / GOVERNMENT MODEL / .45 AUTOMATIC CALIBER” and features the rampant Colt logo. The right side of the slide is marked “COLT’S GOVERNMENT MODEL.” The right side of the frame is marked with the serial number “33946G70.” The barrel is marked “COLT .45 AUTO / MK.IV/SERIES ‘70.” 

Barrel Length: 5”

Sights / Optics:  The front sight is a ramped blade fixed to the slide. The rear sight is a square-notch dovetail, drift-adjustable for windage. 

Stock Configuration & Condition:   The grips are checkered cherry hardwood panels with a smooth finish and a deep red tone. They are free from cracks or chips, though there are a few faint finish marks from handling. These grips enhance the classic look of the nickel frame and rate in about Fine-Excellent overall condition. 

Magazine Quantity & Condition:  Includes one nickel Colt .45 ACP magazine in Very Good condition with minor operational wear and strong feed lips.

Type of Finish: Nickel

Finish Originality: Original

Bore Condition:  The bore is bright, the rifling is sharp. There is no visible erosion in the bore. In this writer’s opinion, the bore rates 9/10.

Overall Condition:   This pistol retains about 98% of its original nickel finish. The balance of the finish shows light operational wear along the slide and frame rails, minor dulling at high-contact points such as the front strap, and faint surface scratches typical of nickel finishes. The screw heads are sharp. The pins are clean and unmarred. The markings are crisp and legible throughout. Overall, this pistol rates in about Excellent condition.

Mechanics:  The action functions correctly. The slide cycles smoothly, and the trigger breaks cleanly. We did not fire this pistol. As with all used firearms, a thorough cleaning may be necessary to meet your maintenance requirements.

Box, Paperwork & Accessories:  None

Our Assessment:   The Colt Government Model MK IV Series 70 in .45 ACP is a quintessential example of Colt’s post-WWII refinement of the legendary 1911 platform. Introduced in 1970, this model features the hallmark Series 70 collet bushing and a more refined trigger pull than its predecessors, all while maintaining the rugged reliability and combat-tested ergonomics of the original M1911. The 5″ barrel, steel frame, and single-action operation make it a top-tier choice for serious shooters, collectors, and anyone who values timeless American craftsmanship.

This particular pistol features a factory bright nickel finish—a less common and highly desirable option that enhances its presentation-grade aesthetic. The reflective surface beautifully complements the deep rollmarks and classic styling, making it a standout in any Colt or 1911 collection. The Series 70 design also omits the later Series 80 firing pin safety, which many enthusiasts prefer for its cleaner trigger break and simpler internals.

Whether you’re a seasoned collector searching for a high-condition vintage Colt or a shooter wanting a historically significant .45 ACP, this MK IV offers both pride of ownership and range-ready functionality. With its iconic profile, excellent trigger, and legacy-backed performance, this Colt continues to represent the gold standard in American semi-automatic handguns.  Please see our High Quality photos and good luck on your bids.-C.M.