Geissele Automatics MK4 Federal 10" Super Modular Rail M-LOK Handguard
The Geissele Automatics MK4 Federal is a 10" free-float handguard built from 7000 series aluminum with a Type 3 hardcoat anodized finish. It combines a full-length M1913 Picatinny top rail with M-LOK slots at the 3, 6, and 9 o'clock positions plus the upper 45° quadrants.
This model features integrated M1913 Picatinny rail sections at the fore end in the 3, 6, and 9 o'clock positions, with an elongated bottom (6 o'clock) Picatinny section for accessory placement. Includes barrel nut.