One Horse Releases Two Factory-Tuned 5.56 FRS Pistols
One Horse added two new 10.5-inch 5.56 pistols to its Express Series lineup. Both models—the Express Pistol MLOK and Express Pistol Quad Rail—ship from the factory with Atrius Forced Reset Selector installed. This marks the first time One Horse brings its FRS-equipped platform down to pistol length, mirroring the setup that defined their original 16-inch Express Rifle.
Key Details
Barrel Length: Both pistols feature 10.5-inch barrels in 5.56 NATO.
Rail Options: MLOK and Quad Rail variants give buyers a choice based on optic and accessory preference.
FRS Setup: Factory-installed Forced Reset Selector from Atrius—the same mechanism used on the original Express Rifle platform.
Why It Matters for Gun Owners
Forced Reset Selectors remain legally contentious. The ATF has challenged FRS mechanisms under bump-fire regulations, and their status varies by jurisdiction. Owners in states monitoring select-fire-adjacent hardware should confirm local compliance before purchasing. For competitive shooters and those running shorter barreled setups, the 10.5-inch platform offers velocity trade-offs against maneuverability—standard SBR math. One Horse's decision to pre-install the FRS eliminates end-user installation risk, but buyers should research their state's current stance on FRS devices. The pistol version expands platform appeal to shooters who need truck guns or CQB-ready builds.
DownRange Analysis
One Horse is betting FRS devices survive ongoing legal pressure. The company's factory installation approach signals confidence, but also creates liability concerns if federal enforcement tightens. Courts have split on FRS legality—some rulings distinguish them from banned bump stocks; others treat them with skepticism. Buyers should document their purchase context and stay informed on ATF guidance. For the market: this move targets the SBR pistol crowd looking factory-precision options. The dual-rail offering acknowledges real-world use cases. Smart play on market segment, but FRS ownership requires baseline legal awareness.
