Maple Leaf MR. Hop Up Silicone for AEG-60

For AEG HOPUP-Larger & Wider contact area inside of BB pellet- Silicone materials means no warm up required compared to rubber- 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”Recommended hardness / FPS combinations:- 50 degree: Up to 360 FPS- 60 degree: 295-390 FPS- 70 degree: 360-460 FPS- 75 degree: 425-490 FPS- 80 degree: 490 FPS up