Product Description Features: Includes polymer flip sights Includes metal flash hider Includes new mid cap magazine Steel sling plate Aluminum free-float MLOK rail system Microswitch trigger unit w/MOSFET Quick-change gearbox Functioning bolt catch Ambidextrous Controls Specifications: Caliber: 6mm Power Source: Electric Muzzle Velocity w/0.20g BB: 320-340fps (100mps) Muzzle Energy w/0.32g BB: 1.0J Hopup: Adjustable Lipo Ready: Yes Battery Location: Buttstock Recommended Battery: 7.4v LiPo, 11.1v LiPo Fire Modes: Safe/Semi/Full-Auto Magazine Type: M4 compatible Magazine Capacity: 120 mid caps, 300 round high caps, etc. Package Includes: 1 x 120 round mid cap magazine, manual, cleaning rod, flip up sights Product Warranty: 30 day limited warranty from Arcturus Construction: nylon fiber body with aluminum handguard Barrel Thread Type: -14mm (counter-clockwise) Hopup Chamber: rotary dial plastic chamber (located in the ejection port) Bucking: 60 degree bucking Gearbox Type: Version 2, quick-change spring guide Gears: Version 2/3 compatible Bushing Size: 8mm bearing Piston: Polycarbonate piston with steel teeth, polycarbonate ported piston head Spring: ~M100 Motor Type: long type Wire Harness: silver corded wire, microswitch trigger, inline MOSFET Plug Type: Amass Deans style T connector Inner Barrel Type: brass, standard AEG cut WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov/product Customer Reviews