Walther Colt M4 Carbine Tactical Rimfire .22 LR Semi-Auto Rifle, 16.2 in Threaded Barrel, 30+1, German-Made
This Colt M4 Carbine Tactical Rimfire is a dedicated .22 LR AR-pattern rifle manufactured by Carl Walther in Germany under license from New Colt Holding Corp. It features a 16.2-inch M4-profile, threaded barrel with an A2 flash hider, a flat-top Picatinny receiver rail, and a carbine-length handguard with top and bottom accessory rails. Designed as a rimfire M4-style trainer, it uses a straight-blowback system with proprietary magazines and includes practical AR-style controls.
Notable functional details include an internal last-round bolt hold-open, an adjustable bolt-speed screw for ammunition tuning, and German proof/import markings. The rifle comes with a detachable A2-style rear sight, fixed A2 front sight base, and a 6-position telescoping stock for adaptable fit.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: The bolt shows minor scorching. Light blemishes are present on exterior surfaces.
What’s Included
- Original box
- Detachable A2-style rear sight (installed)
- Polymer angled foregrip (installed)
- 2x 30-round proprietary Colt/Walther .22 LR Tactical Rimfire magazines
Manufactured by Carl Walther in Germany and imported by Umarex USA, this rifle carries German proof/date codes and clear importer markings. It is a licensed Colt Tactical Rimfire model built on a clamshell-style polymer receiver with AR-15 styling and controls.
The straight-blowback action is tuned for .22 LR and includes an adjustable bolt-speed screw to optimize reliability across different loads. It uses proprietary magazines and provides an internal last-round bolt hold-open. The external bolt-catch paddle is cosmetic, mirroring centerfire M4 controls; certain other M4-style exterior details are present for appearance only.
The 16.2-inch M4-profile barrel has a 1:13.75 RH twist and is threaded at the muzzle, capped with an A2 flash hider. The rifle incorporates a flat-top Picatinny receiver rail, an ejection-port cover, and a brass deflector. Sighting is handled by a fixed A2 front sight post and a detachable A2-style rear aperture.
Ergonomics are true to the M4 layout with a 6-position telescoping stock and an A2-pattern pistol grip. A carbine-length polymer handguard provides top (12 o'clock) and bottom (6 o'clock) rails, with smooth, vented sides at 3 and 9 o'clock; this example has a polymer angled foregrip installed. A manual safety completes the control set.