by Maxx Model
CNC Aluminum Hopup Chamber M4P - PRO
The newest generation of the Maxx Model HopUp Chamber with exceptional high-quality CNC construction, aluminum adjustment wheel, and accurate top-down adjustment (TDC) of the hopup arm. This HopUp Unit is considered amongst the best units with great compatibility across all rifles using rotary style hopup units. Included are all items required for installation, making the assembly easy and reliable.