R-hop is considered as one of the best accuracy upgrades you can do. It replaces the stock bucking with a precision made silicone patch. These will fit SSG10 barrels perfectly aswell as all unbridged Maple Leaf barrels and Crazy Jet's.
It is strongly recommended to get this upgrade together with our TDC 2.0 mod. Stock hop-up design does not allow for precise enough adjustment to use this effectively.
Snipetor R-hop patches are well known in the SSG community and have a great reputation. This new generation of patches come in 55, 65 and 75 degree hardness. Here's the recommended hardness for your setup: