T8 Steel Bolt Carrier Hammer Assist for Marui MWS GBB (Super High Speed Ver.)

T8 Steel Bolt Carrier Hammer Assist for Marui MWS GBB (Super High Speed Ver.) Metal Construction Designed to be a High-Speed Assist for Faster Operation For your Guns The longer threads allow for a finer adjustment for shorter travel which contributes to an even faster rate of operations Suitable For Tokyo Marui M4 MWS Series Airsoft Gas Blow Back GBB Rifle