Radical Firearms FP75556M47RPRBMPSB 5.56 NATO 7.5" Carbine

The Radical Firearms FP75556M47RPRBMPSB 5.56 NATO 7.5" carbine is purpose-built for operators requiring a compact, highly maneuverable rifle platform without sacrificing velocity or terminal ballistics. This short-barreled rifle (SBR) configuration excels in confined spaces—vehicle egress, room clearing, and close-quarters tactical environments—where traditional 16" carbines become unwieldy.

The 7.5" barrel strikes a practical balance between ballistic performance and portability; at this length, 5.56 NATO rounds still achieve approximately 2,300–2,500 feet per second depending on ammunition load, sufficient for barrier penetration and standard target engagement out to 300 meters. The M4-pattern design features a flat-top upper receiver for optic mounting, a pistol grip lower receiver, and a threaded muzzle (1/2x28) to accept suppressors, compensators, or other muzzle devices essential for noise signature management.

This carbine is ideal for shooters who have completed proper federal registration and tax stamp procedures for SBR ownership, or for those in jurisdictions permitting pistol-configured firearms. Law enforcement tactical teams and civilian home-defense shooters alike benefit from the reduced overall length while maintaining the combat reliability and modularity the 5.56 NATO platform is known for.