GSI Hop-up Arm for APFG (MCX / MPX) Model:MCX The updated spring design eliminates

The updated spring design eliminates the need for a retaining screw

The HK416D GBBR incorporates all the possibilities of the VFC technology and incorporates improved bolt

Experience the QUAKE MTW

protects against hazardous noise while allowing you to hear surrounding sounds

GSI Hop-up Arm for APFG (MCX / MPX) Model:MCX The updated spring design eliminatesGSI Hop up arm for APFG MCX, increases accuracy (hop up tensioner included) The hop up arm included as standard in the APFG MCX series has a lot of left right play, which makes bullets not come out consistently. To solve this problem, GSI improved the play of the hop up arm for the MCX and matched it with a dedicated hop up rubber and hop up tensioner to create the optimal bullet collection. This precision engineered upgrade ensures your shots are