Forward Controls Design 4140 Billet Castle Nut - Black Nitride - CNF IMR Powders 18 inches from receiver to

18 inches from receiver to gas block journal

Wrench flats on shoulder make installation and removal for use on multiple devices simple and easy

And unlike other tools on your bench

Ambidextrous Controls: Ergonomically designed 7075 Aluminum levers allow the user to easily charge their firearm with either hand

SUPER LUBRICATION and PROTECTION - Preferred lubricant on heavy weaponry

Forward Controls Design 4140 Billet Castle Nut - Black Nitride - CNF IMR Powders 18 inches from receiver toThe original MIL SPEC castle nut is a hard product to improve upon, but Forward Controls Design has proven it is not impossible. The CNF is based on the original technical data package specification for the castle nut but does offer several improvements. Deeper staking notches make for much more secure staking. Even installation is improved with the coarse serrations making threading it down to the endplate easier and more comfortable. Features: 4140