CMMG 28B3D0CAB Endeavor 22 20" Rifle

The CMMG 28B3D0CAB Endeavor 22 20" rifle is a modern, lightweight platform engineered for shooters who demand precision and versatility in an efficient package. Chambered in .22 ARC—a contemporary intermediate cartridge bridging the gap between .22 LR ballistics and centerfire performance—this rifle serves competitive shooters, trainers, and tactical practitioners seeking reduced recoil, lower ammunition costs, and faster follow-up shots without sacrificing effective range. At 5.46 pounds, the Endeavor 22 delivers exceptional handling characteristics for both precision work and dynamic shooting disciplines.

CMMG's Endeavor platform utilizes a modular direct impingement design that maximizes reliability and field-stripping simplicity—critical attributes in duty and training environments. The 20-inch barrel balances muzzle velocity with controllability, delivering consistent accuracy across engagement distances typical of intermediate-range tactical scenarios. The rifle's compact profile (37.8 inches overall) facilitates transport and deployment in vehicles or restrictive spaces without sacrificing sight radius or ergonomic control. Precision-machined components and a refined trigger geometry ensure repeatable shot placement, while the lightweight construction reduces shooter fatigue during extended training or competition events.

Law enforcement firearms instructors, competitive shooters, and civilian tactical practitioners benefit from this platform's efficiency and economy of operation. The .22 ARC cartridge enables high-round-count training sessions without excessive wear on components or financial strain on ammunition budgets—essential for units conducting frequent qualification or low-light proficiency drills. The Endeavor 22's Picatinny rail configuration supports modern optics and accessories, allowing customization to suit mission-specific loadouts or personal preferences. Field-proven CMMG engineering ensures functional reliability across diverse environmental conditions and training intensities.