Geissele Automatics Super Modular MK4 Rail AR-15 Handguard - M-LOK - Black - 9.3"

Manufactured by Geissele Automatics
SKU: 05-283B
MPN: 05-283B
Manufactured by Geissele Automatics
3 Reviews

In Stock

Standard orders will ship out within 1 business day if ordered by 3:30 pm CST, Monday-Friday. FFL orders will ship within 5 business days or less as long as we have the information for the transfer destination.

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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.

  • Does not include barrel nut wrench
  • 9.3" handguard weighs just 11.0 oz.
  • Durable black hardcoat anodized finish.
  • Full-length M1913 picatinny top rail.
  • M-LOK slots on five sides.
  • Includes barrel nut
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Accessory AttachmentM-LOK
BrandGeissele Automatics
FinishHardcoat Anodized
Gas System LengthMid-Length
Handguard Length9.3 in
Inner Diameter1.35 in
Manufacturer.Geissele Automatics
MaterialAluminum - 6061-T6
Weight11.0 Oz
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to

Ratings & Reviews

3 reviews

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great quality and product


Excellent customer service one of the best I've dealt with in a very long time. They held my other shipping order so that way when this item came in Stock they would ship as one helping me save money on shipping. As well as the customer service I dealt with was great and they were on top of things contacting me and letting me know if anything has changed. Quick shipping!

Great value


This rail is awesome. The mounting system is rock solid and really easy to install. This won't be my last Geissele rail.


by -

One of the best, if not the best handguard I have ever purchased. I have this one a 10.5" Suppressed SBR and love.
<br>pure sex.