Maple Leaf F Key For WE GBB Pistols

Maple Leaf F Key For WE GBB Pistols Maple Leaf F-Key Hop Up tool for WE gas pistols. An adjustment tool for your pistol's hop-up unit. It adds extra pressure and tension on all WE and WE compatible gas guns. This allows for use of heavier BBs such as .28g, .30g, and higher. Shoots excellent with .30g! Slightly curved and perfectly paired with Maple Leaf hop up buckings.