SG Roller Base
Blade Base: SG Roller Base
Basically a worse SG Semi Flat-Base with a tonne of recoily protrusions and rollers that protrude, creating more recoil than they help with (being hit on a roller being worse than just not being hit at all).
High recoil while doing nothing that SG Semi-Flat Base doesn't already do better.
Overall a very outclassed part.