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Home Rifle Parts Build Kits Handguards & Rails GEISSELE AUTOMATICS AR-15/M16 MK 8 SUPER MODULAR RAILS, M-LOK Support
Sierra Sale!
Upgrade your AR-15 with the lightweight 15" M-LOK MK 8 Super Modular Rail by Geissele Automatics. 💪 Perfect for all your accessory needs!

GEISSELE AUTOMATICS AR-15/M16 MK 8 SUPER MODULAR RAILS, M-LOK - GEISSELE AUTOMATICS 15" SUPER MODULAR RAIL MK-8 M-LOK

854014005816 100015374

Variations:

Upgrade your AR-15 with the lightweight 15" M-LOK MK 8 Super Modular Rail by Geissele Automatics. 💪 Perfect for all your accessory needs!
GEISSELE AUTOMATICS 15" SUPER MODULAR RAIL MK-8 M-LOK
409.9 GBP 0 £409.90 *
Color: Black Length: 15 Product no.: 100015374
Backorderable
409.9 GBP 0 £409.90 *
Ask question
Upgrade your AR-15 with the lightweight Geissele MK8 M-LOK rail system. 💪 Enjoy enhanced strength and modularity for all your accessories!
GEISSELE AUTOMATICS 9.3" SUPER MODUALR RAIL MK8 M-LOK BLACK
344.9 GBP 6 £344.90 *
Color: Black Length: 9.5 Product no.: 100015372
In stock
344.9 GBP 6 £344.90 *
Ask question
Upgrade your AR-15 with the 13.5" M-LOK Geissele Automatics handguard. Lightweight, durable, and versatile! 🔧 Perfect for any shooter.
GEISSELE AUTOMATICS 13.5" SUPER MODULAR RAIL HANDGUARD M-LOK BLACK
379.9 GBP 18 £379.90 *
Color: Black Length: 13.5 Product no.: 100015373
In stock
379.9 GBP 18 £379.90 *
Ask question
Upgrade your AR-15 with the Geissele MK8 10.5" M-LOK rail! 💪 Lightweight, ergonomic, and perfect for customizing your setup.
GEISSELE AUTOMATICS MK8 10.5" M-LOK SUPER MODULAR RAIL BLACK
374.9 GBP 9 £374.90 *
Color: Black Length: 10.5 Product no.: 100042898
In stock
374.9 GBP 9 £374.90 *
Ask question
Upgrade your AR-15 with the lightweight Geissele MK8 M-LOK rail system! 🛠️ Enjoy enhanced strength and versatile attachment options.
GEISSELE AUTOMATICS MK8 10.5" M-LOK SUPER MODULAR RAIL DDC
399.9 GBP 5 £399.90 *
Color: DDC Length: 10.5 Product no.: 100042899
In stock
399.9 GBP 5 £399.90 *
Ask question
Upgrade your AR-15 with the lightweight, ergonomic MK 8 M-LOK rail system. 🔧 Enjoy customizable attachment points and superior strength!
GEISSELE AUTOMATICS MK 8 15" M-LOK SUPER MODULAR RAIL, DDC
439.9 GBP 0 £439.90 *
Color: DDC Length: 15 Product no.: 100018964
Backorderable
439.9 GBP 0 £439.90 *
Ask question
344.9 439.9 6 GBP
409.9 GBP £409.90

Prices inclusive of duty & VAT.

Product no.: 100015374

Mfr. No.: 05-286B

854014005816 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
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Wish List Ask question

Variations:

Upgrade your AR-15 with the lightweight 15" M-LOK MK 8 Super Modular Rail by Geissele Automatics. 💪 Perfect for all your accessory needs!
GEISSELE AUTOMATICS 15" SUPER MODULAR RAIL MK-8 M-LOK
409.9 GBP 0 £409.90 *
Color: Black Length: 15 Product no.: 100015374
Backorderable
409.9 GBP 0 £409.90 *
Ask question
Upgrade your AR-15 with the lightweight Geissele MK8 M-LOK rail system. 💪 Enjoy enhanced strength and modularity for all your accessories!
GEISSELE AUTOMATICS 9.3" SUPER MODUALR RAIL MK8 M-LOK BLACK
344.9 GBP 6 £344.90 *
Color: Black Length: 9.5 Product no.: 100015372
In stock
344.9 GBP 6 £344.90 *
Ask question
Upgrade your AR-15 with the 13.5" M-LOK Geissele Automatics handguard. Lightweight, durable, and versatile! 🔧 Perfect for any shooter.
GEISSELE AUTOMATICS 13.5" SUPER MODULAR RAIL HANDGUARD M-LOK BLACK
379.9 GBP 18 £379.90 *
Color: Black Length: 13.5 Product no.: 100015373
In stock
379.9 GBP 18 £379.90 *
Ask question
Upgrade your AR-15 with the Geissele MK8 10.5" M-LOK rail! 💪 Lightweight, ergonomic, and perfect for customizing your setup.
GEISSELE AUTOMATICS MK8 10.5" M-LOK SUPER MODULAR RAIL BLACK
374.9 GBP 9 £374.90 *
Color: Black Length: 10.5 Product no.: 100042898
In stock
374.9 GBP 9 £374.90 *
Ask question
Upgrade your AR-15 with the lightweight Geissele MK8 M-LOK rail system! 🛠️ Enjoy enhanced strength and versatile attachment options.
GEISSELE AUTOMATICS MK8 10.5" M-LOK SUPER MODULAR RAIL DDC
399.9 GBP 5 £399.90 *
Color: DDC Length: 10.5 Product no.: 100042899
In stock
399.9 GBP 5 £399.90 *
Ask question
Upgrade your AR-15 with the lightweight, ergonomic MK 8 M-LOK rail system. 🔧 Enjoy customizable attachment points and superior strength!
GEISSELE AUTOMATICS MK 8 15" M-LOK SUPER MODULAR RAIL, DDC
439.9 GBP 0 £439.90 *
Color: DDC Length: 15 Product no.: 100018964
Backorderable
439.9 GBP 0 £439.90 *
Ask question

Description:

Lightweight, Free-Floating Modular Handguard
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.

SPECS: Aluminum, hardcoat anodized, matte black. 2.2" (cm) high, 1.25" (cm) I.D., 1.97 (cm) O.D.

Top takeaways

  1. Ergonomic and lightweight modular rail system with M-LOK attachment points along the entire length for versatile accessory placement.
  2. Constructed from aircraft grade aluminum for optimal strength-to-weight ratio, featuring a free-floating design that attaches via a long, hardcoat anodized barrel nut.
  3. Includes two standard, non-rotating QD slots on each side, but does not come with a gas block.

Attributes

  • Colour: Black
  • Length: 15
  • Material: Aluminum
  • Style: M-LOK
  • Type: Free Float
  • Weapon type: AR-15
  • Delivery weight: 0.635kg
  • Shipping height: 97mm
  • Shipping width: 99mm
  • Shipping length: 465mm
  • UPC: 854014005816

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.

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