The Geissele MK14 Super Modular Rail (brand part no. 05-1658S) is a 10.5-inch, Desert Dirt-finished handguard built with a smaller diameter and lower overall height than Geissele’s MK8 rail for a noticeably slimmer package in hand. It ships with an updated version of Geissele’s proven barrel nut design, a 2.25-inch-long nut that increases surface contact where the rail meets the receiver, so builders get easy installation along with a platform that stays straight and true along the entire length of the free-float rail. Geissele precision-machines the MK14 from 7000-series aluminum, keeping it strong and rigid without adding unnecessary weight.

Key Specifications

• Measures 10.5 inches in length.
• Finished in Desert Dirt Color (DDC).
• Built with a smaller diameter and lower overall height than Geissele’s MK8 rail for a slimmer profile.
• Includes an updated 2.25-inch-long Geissele barrel nut.
• Barrel nut design eases installation while keeping the rail straight and true along its full length.
• Machined from 7000-series aluminum for strength and rigidity at low weight.

Frequently Asked Questions

How does the MK14 compare to Geissele’s MK8 rail? It has a smaller diameter and lower overall height for a slimmer package.

Does this rail include a barrel nut? Yes, it ships with Geissele’s updated 2.25-inch-long barrel nut.

Buy the Geissele MK14 Super Modular Rail

Get a slimmer, straight-and-true rail in a Desert Dirt finish. Order it from our Geissele Automatics lineup of AR handguards for fast shipping from our Lubbock, Texas gun shop.