Geissele 10.5" HK416 M-LOK Black Super Modular Rail 05-854B

The Geissele 10.5" HK416 M-LOK Black Super Modular Rail 05-854B was designed to replace the standard rail on an HK416 or MR556 weapon platform. The rail system utilizes the stock HK barrel nut, incorporating the strength and rigidity expected of a Geissele product.

This Geissele Super Modular rail is made from 6061-T6 aluminum and finished in Type III hardcoat anodize, meeting military specifications. It features M-LOK mounting options at the 3, 6, and 9 o'clock positions along the entire length of the rail, plus a full Picatinny rail along the top and shortened Picatinny rails on the forend.

Trusted by elite warfighters who provided direct input during development, this HK416 rail carries a 1.35" inner diameter and is specifically optimized for a 10.5" barrel - length matters here, since a mismatched barrel-to-rail length changes gas system tuning. This Geissele 10.5 handguard comes in at a genuinely light 10.3 oz. On HK416 uppers with sling loops on the gas block, those loops will need to be removed before this rail installs properly.

Key Features:

• 10.5" length (actual rail length 9 3/8")
• 6061-T6 aluminum, Type III hardcoat anodized
• M-LOK slots at 3, 6, 9 o'clock plus shortened forend Picatinny sections
• Uses stock HK barrel nut for installation
• Inner diameter 1.35", outer diameter 2.08"
• Weight: 10.3 oz
• Black finish
• Optimized for 10.5" HK416/MR556 barrels

This Geissele 10.5 Rail brings Geissele's Super Modular engineering to the HK platform without requiring a non-factory barrel nut.