The Knight’s Armament SR-15 E3 Mod2 with a 16” cold hammer forged barrel, chambered in 5.56NATO, is perhaps the pinnacle of modern AR-15 rifle design and production. Knight’s Armament was founded by C. Reed Knight Jr. in 1974. With initial consultation and cooperation of friend and mentor Eugene Stoner, Reed’s https://ammoandgunmaster.com/product/knights-armament-sr-15-e3/