Geissele Automatics Mk4 M-LOK Super Modular Rail AR-15 Handguard - Black - 13.5"

Manufactured by Geissele Automatics
SKU: 05-278B
MPN: 05-278B
Manufactured by Geissele Automatics
1 Review

In Stock

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The Geissele Automatics Mk4 Super Modular Rail is an ultra-light purpose-built free float handguard for the AR-15 platform. This modular rail features M-LOK slots on five surfaces for your favorite accessories that double as excellent heat venting to help your rifle run cool. The Mk4 features integral M1913 rail sections at the 3, 6, and 9 o'clock positions at the muzzle end to accommodate weapon lights and bipods. The included proprietary barrel nut increases surface contact, increasing accuracy and repeatability of zero should the handguard be removed during maintenance.

  • 13.5" handguard weighs just 14.1 oz.
  • Durable black hardcoat anodized finish.
  • Full-length M1913 picatinny top rail.
  • M-LOK slots on five sides.
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Accessory AttachmentM-LOK
BrandGeissele Automatics
FinishHardcoat Anodized
Gas System LengthExtended Rifle
Handguard Length13.50 in
Inner Diameter1.35 in
Manufacturer.Geissele Automatics
MaterialAluminum - 6061-T6
Weight14.1 Oz

Ratings & Reviews

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Fantastic rail


unbeatable priceThis is by far the easiest rail I've ever installed. Locks up rock solid looks great and with a free gas block you can't beat the price. As always super fast shipping from primary.