Franklin Armory Rs11 .300 Blackout 11.5" Carbine

The Franklin Armory RS11 300blk 11.5" Blk is a short-barreled rifle platform engineered for operators who demand compact firepower without compromise. Built for suppressors and subsonic ammunition, this modern fighting rifle delivers the ballistic efficiency of .300 Blackout in a form factor that excels in close-quarters and vehicle operations. Whether you're a law enforcement professional, private security operator, or serious civilian shooter, the RS11 bridges the gap between a pistol-caliber carbine and full-power rifle performance.

Franklin Armory engineered the RS11 platform around the .300 Blackout cartridge, a caliber specifically optimized for suppressed fire and subsonic loads. The 11.5-inch barrel maximizes velocity while maintaining a subcompact profile—critical for operators working in confined spaces or from vehicles. This length-to-caliber pairing ensures that subsonic ammunition remains supersonic near the shooter (critical for function and reliability) while achieving true subsonic downrange, making it ideal for clandestine operations. The RS11's modular design supports standard AR-platform parts, allowing customization of furniture, optics mounts, and rail systems without proprietary components or gunsmith work.

Law enforcement tactical teams, military special operations support contractors, and professional defensive shooters benefit most from the RS11 300blk's proven reliability and terminal performance. The short 11.5-inch barrel reduces muzzle flash and recoil impulse, enhancing shooter control during rapid engagements while keeping the overall system lightweight at just 1 lb for the upper receiver assembly. Installation requires only a standard AR lower receiver (the upper is sold separately or as part of a complete rifle), making it compatible with existing inventory and training infrastructure. Pair this upper with a quality suppressor and subsonic ammunition for true hearing-safe operation without electronic hearing protection dependencies—a tactical advantage in high-stress encounters.