Kel-Tec Sub2k 5.7 20rd 5.7x28mm 20-Round Threaded Barrel Rifle

The Kel-Tec SUB2K 5.7x28mm Gen 3 is a semi-automatic rifle engineered around the modern 5.7x28 cartridge, offering operators and defensive shooters a compact, magazine-fed platform with minimal recoil and penetration-controlled ballistics. This 16.1-inch threaded barrel rifle delivers the velocity and trajectory consistency that intermediate cartridge users demand, while maintaining a profile suitable for vehicle storage, tactical deployment, and training scenarios where space is at a premium.

The SUB2K 5.7 chambers 5.7x28mm—a purpose-built cartridge developed for military and law enforcement use, characterized by low recoil impulse and effective terminal performance at intermediate ranges. The 16.1-inch barrel is threaded at 1/2x28, enabling integration with standard suppressors and muzzle devices. The rifle ships with a 20-round capacity, matte green finish, and Gen 3 ergonomics refined for ambidextrous operation and control. At 5.75 lbs, the platform remains lightweight for sustained carry and rapid deployment without fatigue penalty during extended operations or range sessions.

This rifle addresses shooters evaluating alternatives to 9mm carbines who prioritize lower recoil energy, flatter trajectory, and barrier-blind performance. The 5.7x28 cartridge penetrates less than rifle rounds yet delivers superior velocity to pistol-caliber carbines, making it a logical choice for defensive carbine training, backup rifle roles, or precision intermediate-range work. Operators and enthusiasts seeking a properly spec'd, factory-configured rifle in this emerging caliber find the SUB2K 5.7 Gen 3 a field-proven platform with Kel-Tec's established manufacturing standards.