BCA CNC Aluminum Cylinder Head w/ Sorbo (AOE Corrected) (V2/V3) AEG Gearbox Upgrades With rat tail group and

With rat tail group and a control switch button switch

Sling mount for Standard M4 AEG Platform

While not as powerful as the CO2 version (350 fps) with this gas version clocking in at 280 FPS on TOP gas

8 Brontosaurus GBB Pistol (Silver)

Taking HFC22 gas and achieving 330fps out of the box

BCA CNC Aluminum Cylinder Head w/ Sorbo (AOE Corrected) (V2/V3) AEG Gearbox Upgrades With rat tail group andCNC Aluminium cylinder head with a re machined impact face and Sorbo pad installed for shock reduction. Use this to reduce gearbox shock and stress. It will also help space out the piston assembly for an improved angle of engagement. Sorbo pad included and installed.