Buy it from TMT Airsoft (unless you’re Canadian, then good luck finding it).

Specs:

• Overall Length: 1005mm
• Weight: 3650g
• Inner Barrel Length: 510mm
• Inner Barrel Material: Brass alloy
• Outer Barrel Length: 500mm
• Outer Barrel Material: Aluminum alloy
• Flash Suppressor Material: Steel
• Upper Material: Steel
• Lower Material: Steel
• Muzzle Velocity: 110-120m/sec with 0.2BB
• Battery suggestion: 8.4v/1400mah
• Magazine Material & Cap: PC/30 Rounds
• Power Spring type: M110
• Bevel Gear type : Powder metallurgy/Steel
• Spur Gear type: Powder metallurgy/Steel
• Sector Gear type: Powder metallurgy/Steel
• Gear Box Bearing: Brass 6mm
• Piston Head: Fiber glass reinforced plastic
• Piston Meterial: Fiber glass reinforced plastic
• Motor: 25000 rpm Short Axis
• Spring Guide: Steel
• Stock type & Material: Fiber glass reinforced plastic
• Mock bolt Material: Steel+Zinc alloy
• Hand-guard Material: Fiber glass reinforced plastic
• Wire set type & Material: Teflon cable wire