Knight’s Armament KAC KS1 SR-15 E3.2 13.7″ MLOK Upper Receiver Group

Item: 121435

The 13.7″ KS-1 is the next generation of SR-15s from Knight’s Armament and the current-issue service rifle of the Royal Marines.
The KAC KS-1 SR-15’s 13.7” chrome lined, 5.56mm NATO barrel is of a heavy profile and has ball dimples machined into the surface to increase rigidity for higher volumes of fire. It features a proprietary mid-length gas system that increases reliability and durability while also reducing felt recoil and is free-floated inside a 13” URX 6 handguard. An E3.2 round-lug bolt design both enhances function and increases bolt life far beyond the industry standard. On top of featuring a lobster-tail extractor for more reliable extraction, the E3.2 bolt features dual ejectors — ensuring positive ejection when utilizing suppressors.

The 5.56mm 3-Prong Flash Eliminator interferes with propellant gas combustion forward of the muzzle to significantly reduce flash signature, will not ring upon firing or when struck, and is compatible with the KAC line of 5.56mm QDC Signature Reduction Devices.