AVAILABLE NOW, AND ON SALE FOR $1549,.....Knight's Armament SR-15 E3 Mod 2 complete upper. This complete upper assembly is an 11.5" barrel, and Knight's Armament mid-length URX 4. The URX 4 featured 2 anti-rotation QD sling swivel sockets and standard keymod attachment points. A 7 piece rail cover kit is included also included is a 5 slot picatinny rail section. The barrel is fitted with a KAC 3 prong QDC suppressor compatible flash hider and Mod 2 sealed gas block with a carbine length gas system. Included is Knight's Armament micro front sight (elevation adjustable) and Knight's Armament 200-600m micro rear sight that is a flip up, and adjustable for windage and elevation. The upper receiver has the recoil slots "T" numbered and is engraved with the KAC shield logo. An LMT charging handle with tactical latch is included. The E3 bolt includes rounded locking lugs for extreme durability and is matched to the E3 barrel extension. This upper will work with any standard SR-15 or AR-15 lower receiver once the included Knight's Armament HH buffer is installed.