6mmProShop Flash Hider with Built-In Nano Mini Tracer Unit

Features Ultra-compact design; less than 2.5" long and a little over 1" in diameter High-power LED illuminators; 2 illuminators built in for optimal performance Built-in motion sensor; On and Off power controlled automatically by the sensor Can sustain 35 rounds per second Built-in rechargeable lithium battery and USB charging port Integrated battery level indicator; battery lasts up to 20,000 rounds! 14mm Negative threads Length: 60mm (2.36")Diameter: 29mm (1.14")Threads: 14mm NegativeMaterial AluminumBattery: Built-in rechargeable lithium batteryPackage Includes: Tracer UnitManufacturer: 6mmProShopDisclaimer: Intended for use with GREEN glow-in-the-dark tracer BBs only. Results with other colors may varyNote: It is recommended to charge the unit every 2 months when in storage / not in use