Colt Government Model MK IV/Series 70 .45 ACP 1911, 5 in, Blued, 1977 Production, Extended Thumb Safety, Pachmayr Grips
This 1977 Colt Government Model MK IV/Series 70 is a full-size .45 ACP 1911 with classic pre-Series 80 architecture and a period-correct blued finish. It features a G70 suffix serialization, polished flats with matte rounds, and comes configured with a single-side extended thumb-safety lever and Pachmayr wraparound grips, with original-style checkered wood panels included. The package also includes a Colt instruction manual, one 7-round magazine, a tan leather soft case, a suede clip-on holster, and a spare recoil spring.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: This pistol is in great shape with minor, superficial scratches and small blemishes from handling. The bore presents a bright, shiny appearance.
What’s Included
- 1x 7-round magazine
- Leather soft case (tan)
- Suede leather clip-on holster with metal belt clip
- Colt Government Model MK IV/Series '70 instruction manual
- Pachmayr Signature Model wraparound rubber grips (installed)
- Checkered wood grip panels with Colt medallions (not installed)
- Spare recoil spring (loose)
This Government Model retains hallmark Series 70 features: a 5-inch barrel, 7+1 capacity, and carbon-steel construction with a blued finish showing polished flats and matte rounds typical of the era. The slide wears vertical rear cocking serrations and a standard, non-lowered ejection port, paired with fixed GI-style sights.
Its pre-Series 80 design omits a firing-pin block, preserving the original MK IV/Series 70 firing system. The sights are a staked front blade and square-notch rear for the traditional 1911 sight picture.