Hop-Up Chamber for M4 SP-SILV-47 *This V2 version features an

*This V2 version features an improved wheel section where it is now possible to use the original Silverback metal ball click system

Function: white flashlight

a piston buffer and bolt roller to reduce friction and lessen stress on internal parts caused by bolt movement

Once you’re satisfied with the positioning

Hop-Up Chamber for M4 SP-SILV-47 *This V2 version features anThe Retro ARMS design is very similar to the recent MaxModel chamber design, but significantly more affordable and, in our opinion, with better finishes and higher quality. Hop Up chamber for M4 type replicas. Retro ARMS chambers feature components machined from CNC aluminum EN AW 2007 and EN AW 7075; the adjustment wheel is made of polypropylene. The adjustment mechanism is highly effective because the lever does not bend due to the materials used.