Hop-up chamber for M249 Featherweight + HET nozzle

EPeS Hop-up Chamber for M249 Featherweight introduces a revolutionary design, developed after extensive research, combining high performance with simple control. This version is specifically designed for machine guns M249 with a plastic body and V2 gearbox, such as S&T, Cybergun, and others. Not compatible with A&K, Specna Arms, and other models with a classic "brick" type gearbox for M249.

Fine adjustment of hop-up pressure is possible within a range of 360° using the adjustment wheel, marked for easy orientation. The hop-up chamber is equipped with a perfectly tuned shape of internal seating for the hop-up rubber collar, ensuring successful testing with various hop-up rubbers available on the market (EPeS recommends Maple Leaf rubbers).

The chamber is made of aerospace aluminum EN AW 7075-T6 with surface treatment H + PTFE, offering not only high manufacturing quality but also optimal performance.
Additionally, it is possible to secure the chamber against rotation directly in the gun body using the included worm.

You will also receive a CNC nozzle HET with a length of 36.00 mm, modified threading to guarantee perfect feeding and performance.

Innovative Chamber Mounting
For precise shooting and trouble-free feeding, it is necessary for the chamber not to have the possibility to rotate around its axis. The chamber is standardly fixed against rotation in its axis using a groove in the gun's feeding chute.
An alternative option for fixing the chamber against rotation is to use a thread at the top of the chamber at the adjustment ring for hop-up regulation. Using the ..