This bow mounted tail cap fits all our 30LR, 38LRX, 50LR, 50LRX, 66LR, 66LRX and Destroyer lights. Will not fit any of our 20LRX or Mini-Sniper lights. Please note that we can not guarantee if you use this tail on the Destroyer lights that the light will line up perfectly with your sights but it should. Mounts to your bow stabilizer insert in place of your stabilizer