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Questions & Answers
Will this fit an aero precision enhanced upper? Expert Answer

The Geissele 13.5in MK14 Super Modular Rail will not work with the Aero Precision M4E1 Enhanced upper receivers. You will need to use the Aero Precision Enhanced Handguards with that upper receiver.

by Hunter, Gear Expert, September 1, 2022
Does this come with a gas block and gas tube ? Expert Answer

Per Geissele, Effective 3/31/20 Geissele will no longer include the gas blocks with the rails. It will include the barrel nut, but they also stopped including the barrel nut wrench. The barrel nut wrench and gas block now need to be purchased separately. Geissele never included the gas tube with their handguards.

by Armando R., Gear Expert, July 16, 2021
Customer Reviews
Helpful Positive Review Geissele Mk14 Rail Comments by Paul Spencer, January 23, 2024
For those of you that are more focused on the need to buy the barrel nut wrench then the actual product then you should rethink buying this handguard, you're buying the best and don't realize that $20 is irrelevant to your actual build, when you buy ...
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1/1 found this helpful
Helpful Positive Review Not 13 in. by Mr. Lee, Verified Owner, May 2, 2021
The handguard is awesome. The Mlok section is silky smooth and skinny and feels real good in the hands. My only gripe is that the handguard is not 13 in. its 13.5 so buy accordingly when you are trying to get a barrel and muzzle break especially if y...
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3/7 found this helpful
Helpful Positive Review Tough as nails by Shorty, Verified Owner, September 10, 2021
I bought this rail because I wanted a 13.5” rail for my 14.5” pinned and welded barrel. This rail was more than I would usually spend, but after receiving it I can see why. It is clearly designed for durability in harsh conditions. Fit and finish are...
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2/3 found this helpful
Helpful Positive Review Way better than expected by JD, March 31, 2019
The install process was a breeze. The tool needed to torque the barrel nut down is included. Be sure to follow all instructions. It’s lighter than I expected yet solid enough to take a pounding. You can feel that the minute you unbox it. I wasn’t exp...
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1/1 found this helpful
Helpful Positive Review Not 13” actually 13.5” by jmclay, Verified Owner, April 21, 2021
Great product but not 13”. It’s the newer 13.5”. I recommend these rails but really wanted a 13” for my 13.7” build. These rails are proven and have worked great on two of my other builds. I continue to use them. Just wanted a short version to build ...
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8/8 found this helpful
Helpful Positive Review Quality product by Bdawk5, Verified Owner, July 21, 2019
Very pleased with the fit and finish from the mk14. The quality is what you pay for and it is definitely here in this rail. Spend the money and rest assure it’s well worth. Comes with .750 super gas block, install tools and barrel nut.
3/5 found this helpful
Read All 14 Reviews

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Product Info for Geissele 13.5in MK14 Super Modular Rail

As the latest entry to the Geissele line up of Super Modular Rails, the MK14 offers a slimmer package than previous versions due to the improved handguard design. The handguard has a smaller diameter and is shorter, improving grip and reducing the overall weight of the weapon. Plus, these free-floating rails are machined with precision from 6061-T6 aluminum to ensure they are durable, lightweight, and rigid.image

The MK14 Super Modular Rail kit also includes the updated version of the Geissele Barrel Nut design, which allows for easy installation and excellent rigidity to keep your weapon stable. This barrel nut has 2.25 inches of surface contact, giving it plenty of space to interface with the receiver and keeping your mounted optics in position even after firing countless rounds.

Check out other AR Handguards & Forends for help completing your AR build.

WARNING: California`s Proposition 65

Specifications for Geissele 13.5in MK14 Super Modular Rail:

Manufacturer: Geissele
Finish: Type 3 Hard Coat Anodized
Fabric/Material: 6061-T6 Aluminum
Gun Make: AR Platform
Gun Model: AR-15
Gun Type: Rifle
Handguard Length: 13.5 in
Handguard Type: Free-Float
Gun Rail: Picatinny
Weight: 10 oz
Condition: New
Included Accessories: Standard
Inner Diameter: 1.27 in
Outer Diameter: 1.52 in
Height: 2.02 in
Country of Origin: USA
Quantity: 1

Features of Geissele 13.5 inch MK14 Super Modular Rail:

  • Picatinny Rails
  • M-LOK Connections
  • Anodized Finish
  • Free-Floating Handguard

Package Contents:

  • Geissele MLOK MK14, 13.5 Inch Super Modular Rail

Geissele 13.5in MK14 Super Modular Rail Orderable Models

List of Orderable Models

Geissele Super Modular Rail, M-LOK, MK14, 13.5in, Black, GEI05-573B , MPN: 05-573B , UPC: 817953022535 , Code: 1TO-HZ-RS620-GEI05-573B
Geissele Super Modular Rail, M-LOK, MK14, 13.5in, DDC, 05-573S , MPN: 05-573S , UPC: 817953022542 , Code: 1TO-HZ-RS620-05-573S

Geissele 13.5in MK14 Super Modular Rail Unavailable & Discontinued Models

List of Unorderable Models

DEMO, Geissele Super Modular Rail, MLOK, MK14, 13.5in, DDC, 05-573S , MPN: 05-573S-DEMO , Code: 1TO-HZ-RS620-05-573S-DEMO
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