Ultradyne USA Apollo LR, Compensator, 30 Caliber, 5/8X24, Rated For .300 WIN Mag UD11190 The APOLLO LR is Ultradynes answer for the long-range fanatic. This compensator steps it up a level by reducing recoil and muzzle rise like no other product on the market. Apollo LR 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.