Auto-Ordnance ZG-51 Pit Bull .45 ACP Compact 1911, West Hurley Production, 3.625 in Barrel, All-Steel, 4 Magazines
This Auto-Ordnance ZG-51 Pit Bull is a compact, all-steel .45 ACP 1911 from the late 1980s–1990s West Hurley, N.Y. era. Notable features include the 3.625 in barrel, fixed 3-dot sights, and distinctive "PIT BULL" slide engraving with the dog logo alongside the Thompson logo and ZG-51 model marking. It is designed for 7-round single-stack magazines and comes with four magazines.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There are visible handling and use marks on exterior surfaces. Please review the photos for a complete view of the finish and markings.
What's Included
- Auto-Ordnance ZG-51 Pit Bull .45 ACP pistol
- Four 7-round steel single-stack magazines with witness holes
The ZG-51 Pit Bull delivers compact 1911 handling in a robust, all-steel package. The 3.625 in barrel and single-stack frame maintain a shorter profile while retaining traditional 1911 single-action operation, left-side thumb safety, and grip safety.
Slide markings include "ZG-51 AUTO-ORDNANCE .45 CAL" with the Thompson logo and the "PIT BULL" model name with dog logo. The slide has rear cocking serrations only and a matte dark finish matched to the steel frame.
Sighting is straightforward and fast with a fixed 3-dot setup: a ramped front blade with a white dot and a square-notch rear with two white dots. Controls follow a classic layout with a left-side magazine release and a solid, non-skeletonized trigger.
The pistol features checkered black synthetic grips and a rowel (ring) hammer with a lightening hole. It is designed for 7-round single-stack magazines (7+1 capacity) and has an approximate listed weight of 36 oz, underscoring its all-steel construction.
This example is a West Hurley, N.Y. Auto-Ordnance production (pre-1999), aligning with the late 1980s–1990s era of manufacture. It comes with four magazines, offering ready range or carry rotation for a compact .45 ACP 1911 format.