Ravin’s R500E Slate Gray Crossbow Sniper Package was designed for discerning shooters who demand extreme accuracy. This advanced crossbow is equipped with Ravin’s Electric Drive System which can cock and un-cock mechanism with the press of a button. This automatic cocking device attaches directly to the stock and consists of a motor and 12-volt rechargeable battery. Alternatively, the R500E can be manually cocked with the included R500 draw handle. The Sniper Package also features the Adjustable Turret Scope which allows the user to fine-tune their yardage by turning the elevation turret, and a Ravin Scope Level that improves accuracy by indicating whether or not the crossbow is perfectly level. In addition, the R500E is designed with Ravin’s proprietary HexCoil Cam System, which can launch a 400 grain arrow at 500 feet per second with an axle-to-axle width of 3.6 inches when cocked and 7.6 inches un-cocked. The crossbow also features the VersaDrive Cocking system, which is composed of a dual-screw drive that moves the Trac Trigger Firing System back and forth. The VersaDrive’s integrated clutch removes any chance of over-cocking and enables the cocking/de-cocking process to be stopped at any time. Features of the Ravin R500E Slate Gray Crossbow Sniper PackageAdjustable Turret Scope HexCoil Cam System VersaDrive Cocking System Trac Trigger Firing SystemAnti Dry Fire/Auto Safety 500 feet per second (400 grain arrow) Available Accessories (Sold Separately) Ravin Titanium Broad Heads Ravin Aluminum Broad Heads Ravin Steel Broad Heads Replacement Arrows Ravin Crossbows Ravin R500 Slate Gray Electric Crossbow R052 PRESIGHTED in Slate Grey