G&P Aluminum Buffer Version 2 for Marui M4A1 MWS GBB Buffer Tube

G&P Aluminum Buffer Version 2 for Marui M4A1 MWS GBB Buffer Tube Aluminum Construction Allows for fine-tuning of your gun's cycling speed and felt recoil Suitable For Tokyo Marui M4A1 MWS Series Airsoft Gas Blow Back GBB Rifle (Buffer Tube / SI Advanced Receiver Extension (SI012BK/SI012RD)) Include Buffer, 3xWeights, 2xSprings & O-Ring