Geissele Super Modular MK4 Rail AR-15 Handguard – M-LOK – Black – 15″


  • Does not include barrel nut wrench
  • 15″ handguard weighs just 15.4 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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SKU05-315B Category

The Geissele Super Modular MK4 Rail is the perfect free float handguard for your AR-15. This ultra-light rail features M-LOK slots on five surfaces for your favorite accessories, as well as excellent heat venting to help keep your rifle cool. The Mk4 also features integral M1913 rail sections at the 3, 6, and 9 o’clock positions at the muzzle end, perfect for mounting weapon lights and bipods. The included proprietary barrel nut increases surface contact for increased accuracy and repeatability of zero.


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