Knight’s Armament SR-15 E3.2 Bolt Assembly KAC PN 122054 The SR-15 E3.2 Enhanced Bolt features a number of components designed to exceed expectations for durability and service life, even when exposed to extreme and unrelenting conditions. It is a proprietary bolt designed specifically for use in SR-15 and SR-16 rifles. E3.2 Enhanced Bolt Features Dual Ejectors – Provides more positive ejection for increased reliability with suppressors. Enlarged Bolt Face – Provides more positive engagement in the chamber and ensures proper seating upon cycling. Rounded Bolt Lugs – Less prone to chipping or cracking than traditional square lug designs. Reduced-Size Cam Pin – Allows for a thicker bolt web, strengthening a common failure point in the AR-15 bolt design. Enhanced Reliability Extractor – Shaped like a “T” this extractor’s pivot point is shifted forward to apply constant pressure on the case rim and reduce extraction failures. Its dual extractor springs provide a fail safe in the event that one fails during hard usage. This is a complete bolt assembly with all internal parts installed. The E3.2 bolt is only compatible with SR-15s and KAC E3 barrel extensions. Click here to browse our entire selection of Bolt Carrier Groups & Parts.
