Ergo 10 Slot Cantilever KeyMod UMP Rail
Use your Picatinny accessories on your KeyMod handgaurds with this conversion system.
The outside is a Picatinny rail. The inside is the mounting system to the Key Mod handguard.
Hard anodized finish on 6061 T6 Aluminum
*Compatible with #4238-BK Mossberg Shotgun KeyMod Forend
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