Omega Gideon Shadow .45 ACP Semi-Automatic Pistol – U.S.-Made UMP-Style, 7.87" Threaded Barrel, 25+1 Capacity
The Omega Gideon Shadow delivers the iconic HK UMP profile in a civilian-legal, American-made platform chambered in .45 ACP. Built on a glass-filled polymer receiver with a quick-change chrome-moly barrel, this full-size pistol offers tri-lug and threaded muzzle options straight from the factory. With ambidextrous controls, last-round bolt hold-open, and compatibility with HK-pattern accessories, it’s a versatile choice for shooters who want modern sub-gun ergonomics without NFA paperwork.
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 are a few shallow scratches and small finish blemishes on the exterior surfaces. The bore is bright with no pitting.
What’s Included
- XCaliber Firearms .45 ACP quick-change barrel with HK tri-lug and 14/16-24 threads
- Three 25-round polymer .45 ACP UMP-pattern magazines with clear witness windows
The Gideon Shadow uses a straight blow-back, closed-bolt system that keeps operation simple and maintenance minimal. The bolt locks back after the last round, speeding up reloads and providing immediate visual status.
The 7.87-inch chrome-moly barrel is retained by a single cross-pin, allowing caliber swaps or maintenance without tools. Its tri-lug interface plus 16.1×1 RH threads give you instant compatibility with suppressors or muzzle devices.
Omega molds the receiver and frame from glass-filled polymer, reducing weight while keeping strength high. Brass inserts are embedded for modular rail attachment points, letting you add optics or accessories without stressing the polymer shell.
Controls are set up for modern use. The ambidextrous two-position safety selector and paddle-style magazine release favor both right- and left-handed shooters. An HK-style molded front and rear sight system provides a durable, snag-free sight picture.
Because the platform shares dimensions with the HK UMP family, it accepts compatible folding stocks or pistol braces through the integrated rear hinge block, making future configuration changes straightforward.