MR Hop VSR/GBB Bucking 60° (Yellow)

"Maximum Range" MR.HOP

features:
 ?For GBB/VSR10 spec inner barrel and without modify
 ?Larger & wider contact area inside of BB pellet, has better hop effect with heavy BB
 ?For Heavy BB pellet only
 ?The "Shield" shape groove design has better hop effect when tensioner/lever press it
 ?Retain the steel "C-ring" design for airseal from "Transformer HOP"series