The name Maple Leaf MR or "Maximum Range" hop-up bucking highlights its key feature: maximum range. The MR hop-up bucking combines the easy installation of a traditional hop-up bucking with the performance of an R-hop patch. Instead of the usual nub, it features an R-hop style nub that completely fills the barrel window, creating a long and even contact surface for the BB. This extended contact surface imparts a strong spin on the BB with a gentler effect compared to a standard nub. The smoother and stronger spin allows the use of heavier BBs, improving both accuracy and range.
The MR hop-up bucking also incorporates innovations from Maple Leaf’s earlier versions. The front section is textured like the Super Macaron, ensuring a tight seal against the barrel and hop-up unit. The lips of the MR bucking are slightly longer than usual, similar to the Super Macaron. These longer and thicker lips provide better air seal. Note! Due to the longer lips, correct nozzle length is especially important to maintain reliable feeding.
In airsoft guns, a standard round nub does not work optimally with Maple Leaf’s new buckings designed for long contact surfaces, as the point pressure of a round nub bends the contact area into a curve. This prevents full benefit from the MR hop’s long contact patch and may cause the bucking to deform in unintended ways. We recommend using the MR hop with a Maple Leaf curved nub or a curved adjustment arm for best performance. For GBB pistols, use the Maple Leaf I-Key nub.
Hop-up Bucking Hardness Ratings
The hardness rating indicates the softness of the bucking. The lower the number, the softer the bucking. Different hardness levels perform differently depending on the power of the gun. In other words, the hardness rating can be used as a guideline when selecting a suitable bucking for your airsoft gun based on its power. As a rule of thumb: the more powerful the gun, the harder the hop-up bucking should be. The table below shows the Taiwanese manufacturer’s own recommendations for different power levels.
| Hardness and Color |
Recommended Power Range |
| 50 – Green |
Below 110 m/s (1.2 J) |
| 60 – Yellow |
90-120 m/s (0.8-1.5 J) |
| 70 – Blue |
110-140 m/s (1.2-2 J) |
| 75 – Red |
130-150 m/s (1.7-2.25 J) |
| 80 – Black |
Over 150 m/s (2.25 J) |
