Knights Armament Company SR-15 IWS Upper Receiver Assembly, Complete w/E3 Bolt and ready to drop on any AR15/M16 lower
Includes:
16" Cold Hammer Forged Chrome Lined Barrel MIL-B-11595E 4150 CMV barrel, full mil-spec and super long life
KAC 'E3' Rounded Lug Bolt provides Reliability and Extreme Life Span
Flat-top upper receiver with M4 Feed Ramp cuts
URX Free Floating Rail with Integrated Front Sight
KAC Mid-Length Gas system for smooth shooting, lower felt recoil, reliability, and longevity
KAC 2-600m Flip Up Rear Sight P/N 98474
KMC SR-15 Owners Manual