Geissele Automatics MK4 Federal Free Float AR-15 Handguard - M-LOK - 10" - DDC

The Geissele Super Modular Rail MK4 Federal in DDC delivers the same government-contract proven platform as the black variant in a Desert Dirt Color finish — built for operators and shooters running earth-tone builds who need the MK4's ultra-lightweight free float capability and integrated Picatinny sections in a field-ready color. The MK4 Federal is the same handguard supplied under contract to the Federal Bureau of Investigation.

The MK4 Federal DDC is a 10-inch free-floating AR-15 handguard designed for compact duty builds that require an ultra-lightweight, government-proven modular rail in a Desert Dirt Color anodized finish.

Integrated Picatinny sections at the 3, 6, and 9 o'clock positions — including an elongated bottom rail — provide durable Picatinny mounting at the positions most commonly used for lights, grips, and laser systems. M-LOK slots at the main quadrants and upper 45-degree positions add low-profile attachment flexibility everywhere else. The 1.35-inch inner diameter provides suppressor clearance for NFA builds, and extensive venting throughout reduces weight while preserving the structural rigidity the Geissele barrel nut system requires.

Compatible with all mil-spec AR-15 uppers. Made in the USA. DDC finish intentionally varies between batches — not designed for color matching. For uniform color across parts, an aftermarket finish such as Cerakote is recommended.

Built from 7000-series aluminum with Type III hardcoat anodize in DDC for durable field performance.

Purpose-built for duty configurations, law enforcement carbines, and field-use AR-15 builds where the government-proven MK4 platform in an earth-tone finish is the requirement.

Geissele Automatics has been building precision components for military, law enforcement, and civilian shooters since 2004.