Colt Mustang MK IV/Series 80 .380 ACP Micro, 2.75 in Barrel, Blued, All-Steel Short-Frame, 1986, 6+1
This original all-steel Colt Mustang MK IV/Series 80 is the short-frame variant chambered in .380 ACP, manufactured in 1986. It features a compact 2.75 in barrel, blued slide and frame, and fixed sights. The MU-prefix 1986 production and Series 80 firing-pin block make it a notable example for Colt enthusiasts seeking an authentic micro 1911-style pistol from the 1980s.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Condition: Good - Clean, well-maintained, minor wear marks.
Bore Rifling: Good Rifling - Intact, well-defined lands and grooves.
Specific Condition Notes: Minimal age-consistent wear and minor blemishes on exterior surfaces.
What’s Included
- 1x 6-round single-stack steel magazine with witness holes and stepped baseplate (Mustang .380 pattern)
- Nylon soft holster
This Mustang is the micro-size, 1911-style .380 built with an all-steel short frame, giving it the classic Colt feel in a compact footprint. Its 2.75 in barrel and 6+1 capacity keep the dimensions tight while retaining the familiar single-action-only trigger system.
The slide and frame wear a blued finish, complemented by black checkered synthetic grips with silver Colt medallions. Fixed sights include an integral ramped front and a dovetailed rear notch for a simple, durable sight picture.
Mechanically, it uses a recoil-operated, locked-breech design with the Series 80 firing-pin block. Controls include a left-side push-button magazine release, a thumb safety, and an external spur (rowel-style) hammer—hallmark features that mirror full-size 1911 ergonomics in a micro package.
Manufactured in 1986 (MU-prefix), this USA-made example aligns with the 1980s production era of the MK IV/Series 80 line. It includes one correct 6-round magazine matching the Mustang .380 pattern.