Length: 500mm - 590mm (adjustable)Weight: 2350gInner Barrel: ~150mmMagazine Capacity: G&G 9mm style carbine magazine / TBAThread Direction: 14mm NegativeGearbox: Ver 2 Full Metal

All ERG Series rifles feature a mechanical/electrical cut-off system that works in conjunction with the ERG magazines to feed every BB and stop firing when the magazine is empty

S&T Gen 3 LiPo-ready gearbox with micro-switch trigger and quick change spring guide

Comes in an assembly kit

SS Airsoft Custom HPA HK416 w/ PolarStar F2 fast trigger Length: 500mm - 590mm (adjustable)Weight:SS AIRSOFT Custom Built HPA airsoft rifle. We build some of the best custom HPA airsoft replicas you will find on the market. All weapons are test fired, tuned and adjusted to work perfectly right out of the box. This item has been custom installed here at SS Airsoft. Includes: Elite Force Airsoft HK416 Full Size Airsoft AEG Rifle by Umarex FDE PolarStar F2 HPA Engine for V2 Gearbox Airsoft Rifles AceTech Predator MKIII Tracer Suppressor Unit w