The MK14 is the latest entry to the Geissele line up of Super Modular Rails. The new handguard design offers a smaller diameter and overall height to create a slimmer package. Included with the MK14 Super Modular Rail is an updated version of the proven Geissele Barrel Nut design, not only providing ease of installation but superior rigidity. The long surface contact of the 2.25” barrel nut interfaces with the receiver creating a platform that can be trusted to be straight and true the entire length of the free float rail. The MK14 is 3d precision machined using 6061-T6 Aluminum due to its strong, rigid and lightweight properties.

Utilizing Magpul’s M-LOK technology in the 3, 6, and 9 o’clock positions allow the end user full customization and modularity of their rifle to securely mount lights, bipods and other firearm accessories. The Geissele MK14 Super Modular rail is finished in a durable and long lasting Type 3 Hardcoat Anodized available in either Black or Geissele’s DDC finish.

NOTE: IF THIS IS YOUR FIRST TIME PURCHASING A GEISSELE AUTOMATICS RAIL, YOU WILL NEED TO PURCHASE A BARREL NUT WRENCH IN ORDER TO PROPERLY INSTALL THE RAIL.





Item# Description Availability Qty
Break
MSRP Price Choose Qty
GEIS 05-578B
9.5" SPR MOD RAIL MK14-M-LOK

Back Ordered

1 $275.00 $275.00
GEIS 05-573B
13" SPR MOD RAIL MK14-M-LOK

Back Ordered

1 $275.00 $275.00
GEIS 05-573S
13.5"" Super Modular Rail MK14 M-LOK - DDC

Back Ordered

1 $300.00 $300.00
GEIS 05-575B
15" SPR MOD RAIL MK14-M-LOK

In Stock

1 $325.00 $325.00
GEIS 05-575S
15" Super Modular Rail MK14 M-LOK® - DDC

In Stock

1 $350.00 $350.00
Our rails are designed to work with Mil-Spec M4 upper receivers. The compatibility with billet receiver sets is unknown.
HEIGHT: 2.02"
COLOR: Black
MATERIAL: 6061-T6
FINISH: Type 3 Hardcoat Anodize
AVAILABLE LENGTHS: 9.3", 13.5", 15"
INNER DIAMETER: 1.27"
OUTER DIAMETER (DAQ*): 1.52"
SMR MK14 9.3" WEIGHT: 8oz (9.6oz w/ barrel nut)
SMR MK14 13.5" WEIGHT: 10oz (11.5oz w/ barrel nut)
SMR MK14 15" WEIGHT: 11.6oz (13oz w/ barrel nut)