ERGO CASTLE NUT FOR AR15 BLK
Ergo Grip, Castle Nut, Fits AR15/AR10, Steel, Black
ERGO brings this receiver extension castle nut for M4 style receiver extension tubes.
Ergo Grip, Castle Nut, Fits AR15/AR10, Steel, Black
ERGO brings this receiver extension castle nut for M4 style receiver extension tubes.