Maple Leaf F-Key - Hop Up WE Tool

Maple Leaf F-Key Hop Up tool for WE gas pistols. An adjustment tool for your pistol's hop up unit.  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.