Raizen AEG Inner Barrel 6.05MM - 363MM balaclava green Since there is no poppet

Since there is no poppet dwell to tune you simply set your supply regulators output pressure to match the Joules required and you are good to go

AEG hop-up rubber compatible

other rail models will be available as spare

Maple Leaf Hop-Up for GHK M4

Raizen AEG Inner Barrel 6.05MM - 363MM balaclava green Since there is no poppetRaizen barrels are made of precise stainless steel (SUS304) with a tapered muzzle end for better accuracy and FPS. Inner Diameter : 6. 05mm Torelance : + 0. 005mm Outer Diameter : 8. 55mm HOP window length : 6mm Soft fit for HOP rubber The window edges are cut at 45 degree to be gentle on the bucking. Excellent barrel to upgrade your airsoft weapon!