Product Description Features: LIMITED TIME DEAL: FREE ECHO LIPO WITH EACH PURCHASE Nylon fiber body with some metal small parts Quick change spring gearbox Metal flip up sights Blade trigger Classic Army ECS - program fire modes on the fly using the trigger and selector (semi, full, 3-round burst, 5-round burst) Picatinny/MLOK hybrid rail system Wired to Small Tamiya connector 6.03mm Tight bore barrel Rotary hop up chamber PDW stock with easy access battery compartment (takes buffer tube LiPo batteries like Echo Lipo 1 and Echo Lipo 5) Specifications: Caliber: 6mm Power Source: Electric/Gas Muzzle Velocity w/0.20g BB: ~330-360fps (100mps) Muzzle Energy w/0.32g BB: Hopup: Adjustable Lipo Ready: Yes* (Recommend panel Lipo, no greater than 25C discharge) Battery Location: Stock Recommended Battery: 7.4v or 11.1v panel LiPo Fire Modes: Safe/Semi/Full-Auto/Burst Programmable* Length: 550-640mm (stock extended) / 21.7-25.2in Weight: 2.2kg / 4.9 lbs Magazine Type: M4 compatible Magazine Capacity: 120 mid caps, 300 round high caps, etc. Package Includes: 1 x 300 round high cap magazine, manual, cleaning rod, flip up sights, Lipo 7.4V 1450mAh 15C battery Product Warranty: No warranty, no returns, no exchange Construction: Nylon fiber Barrel Thread Type: -14mm (counter-clockwise) Hopup Chamber: large dial plastic chamber (located in the ejection port) Bucking: Standard Classic Army bucking Gearbox Type: Version 2 CA ECS, quick change spring guide Gears: Version 2/3 compatible Bushing Size: 9mm bearing/bushing combination Piston: Polycarbonate piston with 7 metal teeth, polycarbonate ported piston head Spring: ~M100 Motor Type: long type Wire Harness: standard wire/silver corded wire, MOSFET/microswitch trigger Plug Type: Small Tamiya type Inner Barrel Type: brass 6.03mm tight bore barrel, standard AEG cut Inner Barrel Length: 155mm WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov/product Customer Reviews