The MK13 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 MK13 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. Utilizing Magpul’s M-LOK technology in the 3, 6, and 9 o’clock positions and machined-in Picatinny rails at the end allow the end user to customize their rifle and securely mount lights, bipods and other firearm accessories. This product is bundled with a low-profile Geissele Super Gas Block, making the SMR MK13 a comfortable, rigid, value packed and high quality rail system.

Specifications and Features:
Precision Machined 6061-T6 Aluminum
Mil-Spec Type 3 Hardcoat Anodized
Lengtht: 9.5"
Weight: 11.7 oz
Inside Diameter: 1.27"
Outside Diameter-M-LOK: 1.52"
Ouside Diameter at Picatinny: 2.044"
Front Picatinny Rails at 3, 6, 9, O'CLock
M-lok Slots at 3,6,9 O'Clock
Anti-Rotaion Tabs
2.25" Geissele Long Barrel Nut Included
.750" Low Profile Stainless Steel Geissele Super Gas Block Included
Black

Fits:
AR-15 Weapon Platforms Only

NOTE
Compatibility with Billet Receiver Sets is Unknown
Geissele Barrel Nut Wrench Must Be Used For Proper Install