Colt M4 Carbine Tactical Rimfire .22 LR Semi-Auto Rifle, 16.2 in Barrel, AR-15 Platform, A2 Sights, Flat-Top Rail — German-Made Under Colt License
This Colt M4 Carbine Tactical Rimfire stands out as a dedicated .22 LR semi-automatic rifle built to mirror the AR-15 manual of arms. It is a Colt-branded model, not a Walther model, produced in Germany by Carl Walther under license from Colt and imported by Umarex USA. It features a 16.2 inch carbine-profile barrel with an A2 birdcage flash hider, a flat-top receiver with an integral rail and detachable carry-handle rear sight, and German proof marks including the two-letter date code "AK."
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Overall Condition: Good - Clean, well-maintained, minor wear marks.
Bore Rifling: Good Rifling - Intact, well-defined lands and grooves.
Specific Condition Notes: The rifle is in solid shape with various cosmetic imperfections, scratches, blemishes, and areas of finish loss. The bore remains clean and shiny.
What’s Included
- Colt M4 Carbine Tactical Rimfire .22 LR rifle
- Detachable carry-handle rear sight
- Magazine not included
This is a Colt-branded Tactical Rimfire series rifle that replicates M4 controls and handling in .22 LR. It uses a dedicated blowback system rather than a conversion, with a right-side magazine release and a standard-style manual safety selector.
The rifle has a carbine-profile 16.2 inch barrel capped with an A2 birdcage flash hider. Sighting is classic AR: an A2 front sight post paired with a detachable carry-handle rear sight adjustable for windage and elevation. The flat-top upper provides an integral rail beneath the carry handle.
External features such as the forward assist and bolt-catch lever are cosmetic on this rimfire design. It uses an internal last-round hold-open, and the ejection-port cover is non-functional by design. Furniture includes a 6-position telescoping stock offering approximately 11–14 inches of length of pull, an A2-style pistol grip, and a carbine-length two-piece ribbed polymer handguard.
Receivers are aluminum with zinc-alloy internal slide and trigger housings. Markings and proofs include DE, eagle/N nitro proof, Ulm antler proof, the date code "AK," and import/brand rollmarks: Licensed Trademark of New Colt Holding Corp., Made by Carl Walther Germany, Umarex USA (Fort Smith, AR), and Colt’s Hartford address with the rampant pony logo. Approximate overall length is 31.1–34.4 inches with an unloaded weight around 6.0 pounds.