Expanding its popular line of rimfire tactical rifles, Derya Arms has officially introduced the TM22 Timekeeper, a semi-automatic .22 LR rifle engineered to provide a fully featured, out-of-the-box upgrade package for plinkers, small-game hunters, and training enthusiasts. Built upon the proven TM22 semi-auto action, the Timekeeper integrates factory upgrades that shooters typically have to purchase and install aftermarket.
Core Technical Specifications
- Platform Architecture: Blowback-operated semi-automatic rimfire rifle (.22 LR).
- Barrel Construction: 18-inch threaded barrel featuring a suppressor-ready muzzle profile.
- Sighting System: Factory-upgraded high-visibility ramped front sight paired with a rail-mounted adjustable rear sight.
- Chassis & Stock: Polymer stock foundation featuring a push-button adjustable stock equipped with an integrated basepad and adjustable cheek riser.
- Rail Interface: Full-length rear Picatinny rail capable of hosting optics while clearing the rear iron sight setup.
- System Weight: Approximately 4.85 pounds.
- Magazine Capacity: Ships with two 10-round magazines (restricted-state compliant for California, Maryland, and Massachusetts).
- Colorways Available: Grey, FDE, and ODG polymer with black anodized metal components.
- MSRP: $249.00.
Mechanical Engineering & Metallurgy Science
The TM22 Timekeeper is built around a robust aluminum upper and lower receiver combination mated to a reliable blowback-operated bolt cycle. Unlike traditional entry-level rimfire rifles that feature flimsy plastic stocks and basic fixed iron sights, Derya has engineered the Timekeeper for true ergonomic customizability.
The push-button adjustable stock allows shooters to dial in precise length-of-pull and comb height dimensions, ensuring a repeatable cheek weld whether the rifle is used by youth shooters or fully grown adults. Mechanically, the 18-inch barrel is threaded to accept standard rimfire suppressors, transforming the rifle into an exceptionally quiet training tool. The integration of a full-length Picatinny top rail provides rigid, zero-retention mounting space for magnified optics or red dots without sacrificing the factory-installed iron sights.
Tactical Utility & Field Integration
For backyard pest control, informal target practice, or budget-friendly mechanics training, the TM22 Timekeeper hits a massive sweet spot.
Its featherlight 4.85-pound footprint makes it exceptionally easy to carry through long treks in the field or maneuver rapidly during fast-paced steel-challenge drills. The inclusion of two 10-round magazines right in the box—alongside broad state compliance (CA, MD, MA)—ensures broad accessibility, while the suppressor-ready threaded muzzle accommodates modern muzzle devices effortlessly.
Concluding Assessment
Derya Arms continues to disrupt the rimfire market with the TM22 Timekeeper. By packing an adjustable stock, threaded barrel, and upgraded iron sights into a lightweight, reliable .22 LR platform at an aggressive $249 MSRP, Derya delivers incredible value out of the box.