M4A1 MWS Strike Hop Arm dual The rifle is composed of

The rifle is composed of high-quality materials

This item is made by precision CNC process with hardened steel structure

Anodized Finish: Available in striking blue

Install a barrel spacer at the inner barrel muzzle extremity

M4A1 MWS Strike Hop Arm dual The rifle is composed ofFor Strong Hop up & Long range Upgrade! Change your Original M4A1 MWS HOP Arm and get stronger hop up CNC Enhanced Aluminum Alloy+ Designed for GBB M4 Series! REAL GAS BLOWBACK TM M4A1 MWS STRIKE HOP ARM Tokyo Marui GBB M4MWS is known for its stable accuracy, but with its original chamber hop arm, the Hop tends to be weak, and lacks performance for long distance shots. We redesigned the shape of the arm, to get better and stronger Hop up compared to