Precision CNC-machined from a single block of aircraft-grade aluminum, the Rocket Airsoft (SHS) M4 hop-up chamber is a ProWin-style rotary upgrade designed to eliminate body flex, shot variance, and air seal leakage. Featuring a large, side-mounted rotary adjustment dial, it allows for precise, fine-tuned hop settings that resist wandering or unwinding during heavy automatic firing. The rigid monoblock construction ensures tight alignment between the air nozzle, bucking, and inner barrel to boost FPS consistency and grouping tightness. Compatible with standard Version 2 M4/M16 series AEGs.

Includes: CNC Aluminium Chamber Housing, Rotary Adjustment Wheel, Hop Arm, C-Clip, Brass Barrel Spacer Ring, and Mounting Hardware.