Proto Rail: Taking over the field, the Proto Rail is your stepping stone to greatness. High-end performance in a durable and reliable setup, the Proto Rail is for the serious competitor. Featuring Boost Forward Technology, giving you a cushioned push on the ball and delayed bolt speed for increased air efficiency and high rate of fire. Features: One Piece 11" Proto Barrel Increased Flow Hyper3 In-line Air Regulator Anti-chop Break Beam Eye System 155psi Operating Pressure Continuous Three-Dimensional Contoured Body Design Proto Dual-Density Injection Sticky Grip LED Program Control with Four Tournament Modes and Rate of Fire adjustment Ultralite Ergonomic 45 Frame Ultralite Aluminum Trigger Adjustable Clamping Feed neck Self cleaning Eye Pipe technology with integrated ball detents Screwed together bolt kit with metal back cap for easy access. Proto Primo Loader: The Proto Primo Loader does not require any batteries in order to feed paint. The unique spacer