G&P Roller Bolt w/ MWS 5 Postion Buffer Tube Set for Tokyo Marui M4A1 MWS GBB Rifle

G&P Roller Bolt w/ MWS 5 Postion Buffer Tube Set for Tokyo Marui M4A1 MWS GBB Rifle GBB Roller Bolt (WP211A) Marui MWS 5 Position Buffer Tube Marui MWS Aluminum Buffer (Shorty) Suitable for Tokyo Marui M4A1 MWS Gas Blow Back GBB Rifle