Knight's Armament SR-15 KS-3 11.5" M-LOK

The Knight's Armament SR-15 KS-3 is the short end of the current KS line, an 11.5" carbine purpose-built for close-quarters and suppressed work. It replaces the legacy SR-15 E3 CQB and inherits the same logic: the shortest barrel KAC will sell while still feeding the gas system reliably. Inside a vehicle, a doorway, or a sling-ready truck gun role, the 11.5" length is where this rifle earns its keep.

Short barrels are where gas tuning matters most, and the self-indexing Mod 2 system paired with the E3.2 dual-ejector bolt is KAC's solution to the over-gassing and short-stroking that plague lesser 11.5" builds, especially under a suppressor. The URX6 handguard, ambidextrous controls, integral trigger guard, and drop-in two-stage match trigger carry over from the rest of the KS family.