BCM® MCMR-13 (M-LOK® Modular Rail)


The BCM MCMR is one of our favorite handguards to use for builds.

(3 customer reviews)

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Featuring the same industry leading barrel nut and lock up design as originally introduced on BCM’s evolutionary KMR handguard, the MCMR Series of handguards gives the shooter modularity in the M-LOK platform.

This proprietary patented mounting system (US Patent 8904691), includes a mechanical index to the 12:00 rail and positions mounting hardware to mitigate the movement caused by heat generated by the weapon system.

  • MCMR features M-LOK Compatible mounting system.
  • Free Float Handguard eliminates loads from barrel, reducing the deflection for more accurate shooting.
  • Precision Machined Aerospace 6061-T6 Aluminum Alloy, for high strength and lightweight.
  • Proprietary engineered profile offers additional cross sectional strength.
  • Steel Barrel Nut (same KMR, MCMR, and QRF series), to resist movement under heat.
  • Hard Coat Anodized per Mil-A-8625F, Type III, Class 2
  • Handguard alone weighs 8.2 oz
  • Handguard mounting hardware 2.3 oz
  • Includes BCM M-LOK Compatible Sling Mount, (FREE for a limited time)
  • 1.3″ Inside Diameter
  • 1.5″ Wide

Actual length when measured to flare is 13.4″

Designed to be used with pistol length, carbine length, mid length, or Mil-Spec M16 rifle length gas systems; all with a low profile gas block.

The barrel nut will fit over all mil-spec diameter barrels (max of 1″)

Additional information

Weight .5 lbs
Dimensions 15 × 4 × 4 in

3 reviews for BCM® MCMR-13 (M-LOK® Modular Rail)

  1. Daniel Patron (verified owner)

    Awsome product. The team here at Ape are always helpful, keep up the Dope work!

  2. Braxton Hartle (verified owner)

    Great rails will buy again

  3. Robert Hubbard

    Been using these rails for years. Always solid.

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