50 shore Hardness Rhop for Prometheus EG Barrel

As you can see this R-hop has perfect fit. It has the exact wall thickness as the barrel. It doesn’t stick out from the plain of the barrel. When I touch it with my finger I can’t feel height difference between the barrel and the R-hop. They are available in 50 (blue) ,60 (green), 70(yellow) shore hardness and they are made from high quality, cold resistant silicone.

Does not fit on the Krytac barrels from Prometheus!

50 shore hardness is for >350 fps