Description Maple Leaf I Key For WE/Mauri G17/18/19 Improve the hop up adjustment potential on your Tokyo Marui and older WE gas blowback pistol with this Maple Leaf I Key. The key sits beneath the hop arm giving a greater surface area contact with the hop rubber and when set correctly – will improve performance. Please note that if using this part will only work for the older WE pistols which used a wider hop arm as found on Marui versions. On newer WE pistols the design has changed to a narrower hop arm and the Maple Leaf F Key should be used instead.
