Ultralight Geissele MK4 Super Modular Rail in 13.5 inches with Picatinny sections at 3, 6 and 9 o'clock and venting for heat dissipation. The barrel nut wrench and gas block are sold separately.
- Manufacturer Part # : 05-278B
- Model : MK4 Super Modular Rail
- Length : 13.5"
- Attachment : M-LOK
- Material : Aluminum
- Color : Black
- Fits : AR-15/M16/M4
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