Ultradyne USA Apollo LR, Brake, 7MM, Black, 5/8X24 UD11240 The APOLLO LR Compensator is Ultradyne's answer for the long-range fanatic. This compensator steps it up a level by reducing recoil and muzzle rise. This Apollo LR Compensator has a 5/8x24 barrel thread and works perfectly with standard long-range calibers" but also tames the magnum calibers that many long-range shooters depend on. The effectiveness that Apollo LR provides gives a shooter the ability to see bullet splash at long distances like never before" even with magnum calibers. Gases are strategically diverted away from the shooter and out of the shooters line of sight. With the Apollo LR" magnum calibers are now stress free to shoot.