Maple Leaf Pistol Hop Up Adjustment Wheel. For use with Glock or various other Toyko Marui and WE airsoft gas pistols with a slightly smaller wheel diameter.  Easily adjust your airsoft handgun’s hopup with this part.  Also works with WE clones, AW Custom, and other types of common airsoft gas gun systems.

Can also work in the Hi-Capa or 1911, but there’s a different bigger wheel specifically made for those.