This includes a brand new Smart Parts Ion, UFD – EZ Lock Clamping Feedneck(No Tools Needed to adjust), and UFD Roller Trigger. Features: Ultra fast rate of fire – 17 bps in semi auto and rebound modes, and 10 bps in 3 shot burst or full auto modes. Extremely lightweight – weighs in at just 2.2 lbs. Break-beam Vision eyes – shoot up to 17 shots per second without ever chopping paint Interchangeable Body Kits – Instantly change the color of the Ion’s body with 4 different composite shells Adjustable trigger – shorten the trigger pull without ever taking the Ion apart. Full adjustable forward and back travel to customize the trigger exactly how you want it. 9 volt battery operation – easy to find and replace 9 volt batteries. No more expensive battery packs. One 9 volt battery is included. Does not come with charger. Easy disassembly – One 1/8″ Allen wrench (included) is all you need to disassemble the Ion Vertical feed tube Orings – fit a wide variety of hoppers without having to buy a new feedneck Durable ball detents – last 10 times as long as current ball detents Gas efficient – get between 1000 to 1400 shots from a 68ci 4500psi fill Impulse barrel and feedneck threads. Includes barrel cover and parts kit The EZ Lock makes it simple; just open the lever, insert the hopper, hand tighten the screw and then close the lever. It is that simple no tools are needed. You can install any hopper with the EZ Lock, Halo B, Reloader B, Vlocity, Evo II, Halo TSA, etc.