Cold-Resistant Hop-Up Rubber

A high quality hop-up rubber from G&G.
This supple rubber is more resistant to cold weather than standard hop-up rubbers. It keeps its elasticity resulting in a more consistent trajectory of the BB in all weather.
Includes a brass centering ring for proper centering of your barrel inside the hop-up unit.
Kit also includes a replacement nub for optimum performance.
Tested for use down to -40°.