Angry Gun Complete MWS High Speed Bolt Carrier with MPA Nozzle (Original/ Dark Earth) Airsoft Spring Shotgun The receiver extension features an

The receiver extension features an anti-rotation tab that locks into place over the buffer retaining plunger

and in this case

63mm Outer Barrel Extension + 190mm M

Adjustable BAXS Shooting System

Elevation Adjustable 9

Angry Gun Complete MWS High Speed Bolt Carrier with MPA Nozzle (Original/ Dark Earth) Airsoft Spring Shotgun The receiver extension features anAngry Gun Complete MWS High Speed Bolt Carrier with MPA Nozzle (Original Dark Earth) High Quality and Light Weight Design for Upgrade the Origianl High Speed Bolt Carrier Set More Durable Comes with the Complete MPA Nozzle set Suitable for Tokyo Marui M4 MWS Series Airsoft Gas Blow Back GBB Rifle