Kel-Tec R50 5.7x28mm 16.1" 51-Round Threaded Barrel Carbine

The Kel-Tec R50 5.7x28mm 16.1" 51-Round Threaded Barrel Carbine represents a compact, high-capacity platform purpose-built for operators who demand reduced recoil, minimal muzzle signature, and magazine-fed firepower in a rifle format. Chambered in 5.7x28mm, this carbine delivers ballistic efficiency comparable to intermediate rifle cartridges while maintaining controllability and ergonomic handling. Law enforcement and military end-users prioritize this caliber for its velocity envelope, barrier performance, and compatibility with suppressor systems—making the R50 an ideal choice for specialized operations, training environments, and duty use where capacity and precision matter.

This carbine configuration features a 16.1-inch barrel with 1/2x28 threaded muzzle, enabling seamless integration with sound suppressors and muzzle devices optimized for 5.7x28mm ammunition. The rifle-length platform weighs 7.16 pounds unloaded, striking a balance between portability and recoil management essential for rapid target transitions and sustained fire. The 51-round magazine capacity—substantially higher than conventional rifle platforms—ensures prolonged engagement capability without frequent reloads, a critical advantage in high-volume training or defensive scenarios. The threaded barrel design accommodates aftermarket suppressors and compensators, allowing operators to tailor muzzle signature, sound reduction, and handling characteristics to mission requirements.

Tactical professionals, firearms trainers, and military contractors benefit from the R50's compact footprint (30 inches overall length) for vehicle operations, room-clearing drills, and CQB training. The 5.7x28mm platform excels in suppressed applications, where subsonic ammunition performance and hearing protection prove operationally decisive. Magazine compatibility and aftermarket support within the Kel-Tec ecosystem ensure long-term logistical viability and customization options. Installation of rail systems, optics mounts, and auxiliary accessories follows standard tactical rifle protocols, enabling quick adaptation to evolving mission profiles and individual shooter preferences.