This is the Geissele Super Modular Rail Mk16 Mod 1 in 13.5" length, finished in Desert Dirt Color (DDC) — the exact handguard configuration adopted by USSOCOM for the URG-I (Upper Receiver Group – Improved) program. If you're building a clone-correct URGI, this is the rail. No substitutions. The URGI specification calls for the Mk16, and the 13.5" length is the standard issue length paired with the 14.5" Geissele/Daniel Defense cold-hammer-forged barrel.
Manufactured from 6061-T6 aluminum with Geissele's hardcoat Type III anodizing in DDC Cerakote, the Mk16 uses a proprietary barrel nut that indexes on the upper receiver for perfect top-rail alignment with no sag, no shift. M-LOK slots at 3, 6, and 9 o'clock plus a full-length Picatinny top rail give you every mounting option the URG-I configuration requires — front BUIS, NV clip-on, PEQ-15, SureFire M600, the works.
This is the real-deal Geissele part, not a clone rail. Every serialized URGI upper delivered to SOF units wears this exact handguard.
Order yours today and finish your URGI build right.
Geissele
