AngryGun Complete MWS High Speed Bolt Carrier w/Gen2 MPA Nozzle for Marui M4 MWS GBB (Original)

AngryGun Complete MWS High Speed Bolt Carrier w/Gen2 MPA Nozzle for Marui M4 MWS GBB (Original) Designed to give you more control of your MWS build The BCG features an adjustable nozzle for fine FPS tuning, you simply use the provided allen key to adjust for more or less FPS from the front of the nozzle. Suitable For Tokyo Marui M4 MWS / MWS Spec Series Airsoft Gas Blow Back GBB Rifle