Anarchy Outdoors Armadillo Bolt Knob Black Small. Designed with precision shooters and tactical enthusiasts in mind this uniquely textured bolt knob delivers superior grip even in the most demanding conditions. Features of Anarchy Outdoors Armadillo Bolt Knob Crafted from rugged A20X aluminum the Armadillo Bolt Knob stands up to the elements and abuse. Its aggressive dimpled pattern ensures a solid non-slip interface making bolt manipulation faster smoother and more consistentwhether you're wearing gloves or your hands are wet or muddy. Package Contents: Anarchy Outdoors Armadillo Bolt Knob Anarchy Outdoors A-BK-BLK: Armadillo Bolt Knob Black Small