Your choice of 1/2x28 (.223/5.56) 
	
Super-nice black finish
	
Engraved on both sides
	
.223 is 2.75 ounces
	
CNC machined heat treated steel
	
Crush washer included
	
2 1/4" long
	
Reduces recoil and muzzle climb
	
.223 front diameter is 2cm
	
Listing is for one brake (+ washer)