Geissele Mk4 13.5 M-LOK

The lightweight Geissele 13.5 in. Super Modular Handguard Rail was created for the MK4, and is available in Black and Desert Dirt. It features M1913 Picatinny rail sections at 3, 6, and 9 o’clock. The rail has M-Lock slots at 3, 6, and 9 o’clock positions as well as the upper 45 degree quadrants.


Color Black

Desert Dirt

Gun Model MK4
Handguard Length 13.5 inches

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Additional information

Weight N/A
Color Options

Black, Desert Dirt


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