Gunfire Poland announced last week that they have a new M4 Stubby Killer based on the JG product, in particular the second version of the JG Stubby Killer. Thus you get an all metal M4 AEG, reinforced gears, precision barrel, and the MOSFET... "We have pleasure to inform you that today we have introduced into our offer a new  M4 Stubby Killer, made by GFC Guns. The replica is mostly made of metal, buttstock and pistolgrip are made of ABS and covered with a thin layer of rubber.

What you will find inside the Gearbox :

• 6,04mm precision barrel
• MOSFET
• 7mm ball bearings made of metal
• Reinforced TORQUE-UP gears
• Piston head with bearing
• Reinforced piston with metal teeth
• New type of delayer
• 4locking pawl
• Tapped plate of new type
• Low resistance wires
• Metal guide
• Reinforced frame
• Ball bearing on the engine's gear
• Engine with increased torque
• Chromium-plated cylinder9"