For AEG HOPUP
- Larger & Wider contact area inside of BB pellet
- Requires warm up time but more durable compared to silicone
- Better Performance for Heavy BBs
- 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- 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 "R" means the "RANGE"