ERGO 5-SLOT M-LOK CANTILEVER UMP
Ergo Grip, Low-Pro Cantilever Picatinny Rail, Fits M-LOK, 5 Slot, Black
Use your Picatinny accessories on your handguard featuring M-LOK slots with this UMP conversion system. Converts M-LOK slot into 5 Picatinny slots with this UMP.