Elite Force H&K 416 CQB (Black) AEG 4500psi Tanks O-ring fill valve (OFV) -

O-ring fill valve (OFV) - fill nipple seals using an o-ring instead of the traditional pipe tape

Works extremely well in low-pressure systems

The Epic Speed Feed has been engineered to deliver what many have tried but have continuously failed

689" - Longer

and the Geo 3

Elite Force H&K 416 CQB (Black) AEG 4500psi Tanks O-ring fill valve (OFV) -Features: Length: 705mm 785mm, Adjustable Inner Barrel: 300mm Magazine Capacity: 320rd Hi Capacity. Compatible with Matrix, G&G, Tokyo Marui and other similar M4 M16 Series Airsoft AEG Magazines Muzzle Velocity: 320~340 FPS (Measured with 0. 20g BBs) Thread Direction: 14mm Negative Gearbox: Ver 2 Full Metal, Fully Upgradeable Motor: Long Type Fire Modes: Semi Full Auto, Safety Package Includes: Gun, Magazine, Manual Battery: 9. 6v Small Butterfly Type