The Fortis Standard Castle Nut is manufactured from a solid piece of billet aircraft grade aluminum that offers a significant weight reduction to your castle nut. If youre trying to save ounces, this...
ERGO brings this receiver extension castle nut for M4 style receiver extension tubes.Features :Standard Mil-Spec CAR castle nutMade from steel and coated black
High quality components and precise manufacturing make Advance Tech parts ideal for maintaining and upgrading firearms. The durability, reliability and excellent build quality of these parts will...