MR HOP Hop-up Bucking by Maple Leaf for maximum range without need of "warm-up."
Designed for cold weather.
Protrusion shape: R-HOP patch.
Hardness 50 shore (up to 120 m/s).
Requires the use of heavier BBs (see table)!
Inner sealing ring for barrels with a cutout (ML, T-NT, Slong, and similar).
Compatible with AEG / HPA chambers of the TM standard (M4, AK, CZ EVO, G36, etc.).