HK Army LAZR Barrel Kit - Cocker & Luxe ThreadsCrafted with accuracy and style in mind, the LAZR Barrel Kit delivers unrivaled performance. The precision barrel bore honing used in the development of the LAZR allows for improved diameter uniformity and a smooth interior finish. This attention to surface detail will deliver you the ball on ball accuracy you are looking for in a high end barrel system. Easily change the control bore by sliding the bore inserts in to the barrel back. The LAZR Barrel