This process for all 4 parts is incredibly time consuming

Metallic Receiver Cover

and the ability to simply install onto a standard barrel nut

Matte black anodized finish

Laylax High Bullet Valve NEO R for Hi-Capa Series Magazines lancer This process for all 4High Bullet Valve NEO R Hi CAPA Series Colt Government Series M45A1 FN5 7 M4A1 MWSThe gas emission power can be adjusted!Stable velocity! By installing LayLax NINEBALL High Bullet valve NEO R series, you will experience superb gas emission control, and preventing velocity decrease. The valve comes with variable mechanism which the users can adjust the power by controlling the valve opening. Valve opening can be adjusted from: Fully open to Fully