All Ravin XK7 crossbows, except those in Sniper packages, come with an illuminated scope that integrates an all new speed lock. This locking ring gives hunters confidence that their scope remains dialed in when it’s time to pull the trigger. Features:20 - 100 yard reticlesRed & green illuminationFog, shock, recoil, and waterproofFully coated lensesNew Speed Lock feature lets you lock-in your fps adjustment for next-level confidence in your shot. Ravin Crossbows Ravin 100yd 550FPS Illuminated Crossbow Scope w/Speed Lock Ring R160