CL Project Design Revolution Hop Up Rubber for GBB Pistol

If you are looking for custom parts for a 5 inch GBB inner barrel length, so you can reach up to 70m, this is what you need ? a Revolution designed hop up rubber, compatible for all Marui inner barrel hop up cut.
Compatible with Tokyo Marui, KJ Shadow2, VFC 1911 and Action Army AAP01.