Improve your aim whether you're in the field or at the range with the Firefield 5.56/.223 In-Chamber Red Laser Brass Boresight. Compatible with .223/5.56 rifles, this boresight features in-chamber mounting and brass construction for reliability and durability, while the red laser dot offers precision. The water-resistant design protects against the elements, and the compact design allows for lightweight travel. Firefield 5.56/.223 In-Chamber Red Laser Brass Boresight Beige/Khaki - Scope Rngs And Rifle Accessories at Academy Sports