My Account (Sign in)
Your basket is empty.
0
Basket
contact us by phone Help and contact
Free standard delivery over £199
100-day return policy
My Account (Sign in)
Wish list
Your basket is empty. (0)
Basket
Newsletter Newsletter
Sale

Over 300,000 customers - we say thank you!

4.93/5 "Very good" (1400+ reviews)

40,000+ products for hunting and shooting sports

Rifle Parts Build Kits Handguards & Rails GEISSELE AUTOMATICS MK 8 15" M-LOK SUPER MODULAR RAIL, DDC Support

The Geissele MK 8 15" M-LOK Super Modular Rail is a lightweight, ergonomic handguard offering robust strength, customizable M-LOK attachment points, and secure fit.

GEISSELE AUTOMATICS MK 8 15" M-LOK SUPER MODULAR RAIL, DDC

854014005823 100018964

Filters:

Variations
Filters:
Variations:

Variations:

The Geissele MK 8 15" M-LOK Super Modular Rail is a lightweight, ergonomic handguard offering robust strength, customizable M-LOK attachment points, and secure fit.
AR-15/M16 MK 8 SUPER MODULAR RAILS, M-LOK - MK 8 15" M-LOK SUPER MODULAR RAIL, DDC
439.9 GBP 0 £439.90 *
Backorderable
Color: DDC Length: 15 Make: AR-15 Material: Aluminum Style: M-LOK Product no.: 100018964
Backorderable
439.9 GBP 0 £439.90 *
The Geissele MK8 M-LOK handguard is lightweight, ergonomic, and free-floating, offering versatile attachment points and superior strength for enhanced performance.
AR-15/M16 MK 8 SUPER MODULAR RAILS, M-LOK - 9.3" SUPER MODUALR RAIL MK8 M-LOK BLACK
349.9 GBP 0 £349.90 *
Backorderable
Color: Black Length: 9.5 Make: AR-15 Material: Aluminum Style: M-LOK Type: Free Float Product no.: 100015372
Backorderable
349.9 GBP 0 £349.90 *
The Geissele Automatics 13.5" MK 8 Handguard features a lightweight, free-floating design with M-LOK points for versatile accessory placement and enhanced durability.
AR-15/M16 MK 8 SUPER MODULAR RAILS, M-LOK - 13.5" SUPER MODULAR RAIL HANDGUARD M-LOK BLACK
389.9 GBP 0 £389.90 *
Backorderable
Color: Black Length: 13.5 Make: AR-15 Material: Aluminum Style: M-LOK Type: Free Float Product no.: 100015373
Backorderable
389.9 GBP 0 £389.90 *
The Geissele MK 8 Super Modular Rail offers a lightweight, free-floating design with M-LOK attachment points, ensuring versatility and enhanced performance.
AR-15/M16 MK 8 SUPER MODULAR RAILS, M-LOK - 15" SUPER MODULAR RAIL MK-8 M-LOK
419.9 GBP 0 £419.90 *
Backorderable
Color: Black Length: 15 Make: AR-15 Material: Aluminum Style: M-LOK Type: Free Float Product no.: 100015374
Backorderable
419.9 GBP 0 £419.90 *
The Geissele MK8 10.5" M-LOK rail is a lightweight, ergonomic handguard with versatile M-LOK attachment points and robust aircraft-grade aluminum construction.
AR-15/M16 MK 8 SUPER MODULAR RAILS, M-LOK - MK8 10.5" M-LOK SUPER MODULAR RAIL BLACK
389.9 GBP 0 £389.90 *
Backorderable
Color: Black Length: 10.5 Make: AR-15 Material: Aluminum Style: M-LOK Type: Free Float Product no.: 100042898
Backorderable
389.9 GBP 0 £389.90 *
The Geissele MK8 10.5" M-LOK Super Modular Rail offers a lightweight, ergonomic design with multiple M-LOK attachment points for versatile customization.
AR-15/M16 MK 8 SUPER MODULAR RAILS, M-LOK - MK8 10.5" M-LOK SUPER MODULAR RAIL DDC
409.9 GBP 0 £409.90 *
Backorderable
Color: DDC Length: 10.5 Make: AR-15 Material: Aluminum Style: M-LOK Type: Free Float Product no.: 100042899
Backorderable
409.9 GBP 0 £409.90 *
349.9 439.9 6 GBP
439.9 GBP £439.90

Prices inclusive of duty & VAT.

Product no.: 100018964

Mfr. No.: 05-286S

854014005823 Ergonomic, lightweight modular rail system offers plenty of M-LOK attachment points along the entire length. Single piece assembly is machined from a semi-billet extrusion of aircraft grade aluminum for enhanced strength and performance to weight ratio. Free floating handguard attaches via long barrel nut machined from aircraft grade aluminum with a hardcoat anodized surface. Handguard fits tightly on the barrel nut and clamps securely by two cross bolt. M-LOK technology allows shooter to place accessory rails anywhere along the length of the rail in 45° intervals. Handguard has two standard, non-rotating QD slots on either side. Please note that a gas block is no longer included with these handguards.
Backorderable
4.7/5 - 3 Customers
1
2
3
4
5
6
7
8
9
10+
£439.90

Prices inclusive of duty & VAT.

1
2
3
4
5
6
7
8
9
10+

Backorderable, delivery time approx. 4-12 weeks from the USA warehouse.

100-Day Return Policy

Backorderable, delivery time approx. 4-12 weeks from the USA warehouse.

100-Day Return Policy
No charges until we ship
No charge:
Your credit card will not be charged when you place your order.

No commitments:
You are under no obligation until the goods are shipped. You can cancel your order at any time before shipping - free of charge.

Not until shipping:
Your credit card will only be charged once we ship your order. Not before.
  • Lightweight and ergonomic design
  • Multiple M-LOK attachment points
  • Secure free-floating assembly
Wish List Ask question
349.9 439.9 6 GBP
Description Specification Customers reviews Accessories

GEISSELE AUTOMATICS MK 8 15" M-LOK SUPER MODULAR RAIL, DDC

439.9 GBP £439.90

Prices inclusive of duty & VAT.

1
2
3
4
5
6
7
8
9
10+
£439.90

Prices inclusive of duty & VAT.

1
2
3
4
5
6
7
8
9
10+

Backorderable, delivery time approx. 4-12 weeks from the USA warehouse.

100-Day Return Policy

Description:

Discover the ultimate in modularity and performance with the AR-15/M16 MK 8 SUPER MODULAR RAILS.

The AR-15/M16 MK 8 SUPER MODULAR RAILS from GEISSELE AUTOMATICS is a lightweight, free-floating modular handguard designed for versatility and strength. This ergonomic rail system features a plethora of M-LOK attachment points running the entire length, allowing for seamless customization of your firearm.

Key Features:

  • Single Piece Assembly: Machined from a semi-billet extrusion of aircraft grade aluminum for enhanced strength and a superior performance-to-weight ratio.
  • Free Floating Design: Attaches via a long barrel nut made from aircraft grade aluminum with a hardcoat anodized surface.
  • Secure Fit: The handguard fits tightly on the barrel nut and is clamped securely using two cross bolts.
  • M-LOK Technology: Allows the shooter to position accessory rails anywhere along the rail in 45° intervals for maximum flexibility.
  • QD Slots: Two standard, non-rotating QD slots are available on either side for easy attachment of slings.

Please note that a gas block is no longer included with these handguards.

Specifications:

  • Material: Aluminum, hardcoat anodized, matte black
  • Height: 2.2" (cm)
  • Inner Diameter: 1.25" (cm)
  • Outer Diameter: 1.97" (cm)

Upgrade your firearm with the GEISSELE AUTOMATICS MK 8 15" M-LOK SUPER MODULAR RAIL and experience unparalleled performance.



Attributes

  • Colour: 
    DDC
  • Length: 
    15
  • Material: 
    Aluminum
  • Style: 
    M-LOK
  • Type: -
  • Weapon type: 
    AR-15
  • Delivery weight: 0.751kg
  • Shipping height: 95mm
  • Shipping width: 102mm
  • Shipping length: 457mm
  • UPC: 854014005823

Item details

Made in USA
US export classification: 0A501.y.1

Customers reviews

Customer ratings (3)

4.7 / 5
Definitely recommended

Brownells USA World-Class Rail 05/04/2017

The only reason you shouldn't buy this? You'll want to buy another! Seriously, this is one ROCK SOLID rail with great machining and tight finishes. I've had LaRue, Troy, YHM, etc and the Geissele beats them all IMO. Installation is a breeze and the tolerances are super tight, but not so much that it hinders install. It looks sharp and locks up super tight. I have only two minor criticisms. One, it's expensive. But I am a free-market guy so really that's an observation rather than a criticism. When you factor in the gas block it's not a bad deal. Second, one of the handguard bolt heads was only lightly finished, so it's more sliver than black. I'm surprised that made it past QC on a $300 rail. Quick touch of flat black fixed that. Highly, highly recommend this rail. If you can stomach the cost you won't be sorry.

Definitely recommended

Brownells USA Wonderful rail 03/10/2016

I ordered a 13” Mk4 rail for a 16" mid-length upper. I received this 15" Mk8 instead. This was my first time experiencing anything other than perfect service from Brownells. I installed the Mk8 anyway, which fits very well with my Seekins billet upper. The 15" rail stops 1/4” shy of the base of my brake, so attaching a QD suppressor overtop should be fine. The space between the rail and receiver is, in less than technical terms, one tight-fitting piece of paper. The rail is of remarkable build quality and the rifle feels completely solid, I couldn't be happier with what Geissele is offering. The perfect combination of function and form. I especially like how the long barrel nut supports so much of the rail with very tight tolerance. For my shooting abilities, this results in a negligible shift of point of impact when using irons while the rifle is supported with a bipod at the end of the rail. Besides the product mix-up, I am very pleased with this Geissele rail.

Variations:

The Geissele MK 8 15" M-LOK Super Modular Rail is a lightweight, ergonomic handguard offering robust strength, customizable M-LOK attachment points, and secure fit.
AR-15/M16 MK 8 SUPER MODULAR RAILS, M-LOK - MK 8 15" M-LOK SUPER MODULAR RAIL, DDC
439.9 GBP 0 £439.90 *
Backorderable
Color: DDC Length: 15 Make: AR-15 Material: Aluminum Style: M-LOK Product no.: 100018964
Backorderable
439.9 GBP 0 £439.90 *
The Geissele MK8 M-LOK handguard is lightweight, ergonomic, and free-floating, offering versatile attachment points and superior strength for enhanced performance.
AR-15/M16 MK 8 SUPER MODULAR RAILS, M-LOK - 9.3" SUPER MODUALR RAIL MK8 M-LOK BLACK
349.9 GBP 0 £349.90 *
Backorderable
Color: Black Length: 9.5 Make: AR-15 Material: Aluminum Style: M-LOK Type: Free Float Product no.: 100015372
Backorderable
349.9 GBP 0 £349.90 *
The Geissele Automatics 13.5" MK 8 Handguard features a lightweight, free-floating design with M-LOK points for versatile accessory placement and enhanced durability.
AR-15/M16 MK 8 SUPER MODULAR RAILS, M-LOK - 13.5" SUPER MODULAR RAIL HANDGUARD M-LOK BLACK
389.9 GBP 0 £389.90 *
Backorderable
Color: Black Length: 13.5 Make: AR-15 Material: Aluminum Style: M-LOK Type: Free Float Product no.: 100015373
Backorderable
389.9 GBP 0 £389.90 *
The Geissele MK 8 Super Modular Rail offers a lightweight, free-floating design with M-LOK attachment points, ensuring versatility and enhanced performance.
AR-15/M16 MK 8 SUPER MODULAR RAILS, M-LOK - 15" SUPER MODULAR RAIL MK-8 M-LOK
419.9 GBP 0 £419.90 *
Backorderable
Color: Black Length: 15 Make: AR-15 Material: Aluminum Style: M-LOK Type: Free Float Product no.: 100015374
Backorderable
419.9 GBP 0 £419.90 *
The Geissele MK8 10.5" M-LOK rail is a lightweight, ergonomic handguard with versatile M-LOK attachment points and robust aircraft-grade aluminum construction.
AR-15/M16 MK 8 SUPER MODULAR RAILS, M-LOK - MK8 10.5" M-LOK SUPER MODULAR RAIL BLACK
389.9 GBP 0 £389.90 *
Backorderable
Color: Black Length: 10.5 Make: AR-15 Material: Aluminum Style: M-LOK Type: Free Float Product no.: 100042898
Backorderable
389.9 GBP 0 £389.90 *
The Geissele MK8 10.5" M-LOK Super Modular Rail offers a lightweight, ergonomic design with multiple M-LOK attachment points for versatile customization.
AR-15/M16 MK 8 SUPER MODULAR RAILS, M-LOK - MK8 10.5" M-LOK SUPER MODULAR RAIL DDC
409.9 GBP 0 £409.90 *
Backorderable
Color: DDC Length: 10.5 Make: AR-15 Material: Aluminum Style: M-LOK Type: Free Float Product no.: 100042899
Backorderable
409.9 GBP 0 £409.90 *

Customers also bought

Oops! Something went wrong.

We encountered an error while loading this content. Please refresh the page to continue. If the issue persists, contact our customer support.

Site Navigation
Product Categories
Ordering
Customer Service

Welcome!

to Brownells UK, your destination for anything gun related. With our roots in a genuine passion for firearms, we bring you an unmatched selection of Gun Parts, Firearm Accessories, Gunsmithing Tools, Scopes & Red Dot Sights and Expert Knowledge.

Whether you're looking to maintain, repair, or upgrade, we've got what you need!

For Shooters, By Shooters
We share your enthusiasm and know exactly what you're looking for because we're part of the community.

Massive Selection
From the essentials to the unique, find everything under one roof.

Our blend of tradition and innovation
Shop with the convenience of modern technology, backed by a legacy of experience.

Browse our collection and discover why we're the trusted name in shooting sports & hunting.

Brownells Norge - Komplett utvalg av ladeutstyr, våpendeler, kuler, hylser, kikkerter, optikk og luftvåpen Brownells Österreich - Einer der größten Lieferanten für Waffenteile, Büchsenmacherzubehör & Schießsportzubehör Brownells Switzerland - Einer der größten Lieferanten für Waffenteile, Büchsenmacherzubehör & Schießsportzubehör Brownells Deutschland - Einer der größten Lieferanten für Waffenteile, Büchsenmacherzubehör & Schießsportzubehör Brownells France - Le plus grand fournisseur d'Accessoires pour le tir, Pièces détachées & Outils d'Armurier Brownells Iberica - El mayor proveedor de accesorios para el Tiro, Piezas y herramientas del armero. Brownells Sverige - Världens största leverantör av Vapendelar, Vapensmide Verktyg & Skyttetillbehör Brownells Suomi Brownells Italia - Il negozio del più grande rivenditore di componenti e accessori per armi da tiro, difesa e caccia Brownells Polska - Największy na świecie dostawca części broni, narzędzi rusznikarskich & akcesoriów strzeleckich Brownells Česko - Největší světový dodavatel součástí zbraní, střeleckého příslušenství a zbrojního nářadí
*
Prices inclusive of duty & VAT.

© 2025 Brownells UK
Part of the Brownells Europe Group

Logo Brownells
Classical viewClassical view Mobile viewMobile view
Back to top