hop up gbb maple leaf mr hop we kjw tm gbb gbbr vsr10 2021 version

Suitable for Marui / WE / KJ GBB Pistol,  WE GBBRs and VSR-10 compatible Air Cocking Rifles - Larger amp; Wider contact area inside of BB pellet - Better Performance for Heavy BB pellet. - The #34;Shield #34; shape groove design has better hop effect when tensioner /lever press it. - Retain the steel #34;C-ring #34; design for airseal from #34;Transformer HOP #34;series- The R-hop Rubber kit begin from a small group user who want to increase the range and hop effect of heavy bb. - The title #34;R #34; mean the #34;RANGE #34;