BCM® MCMR-13 (M-LOK® Modular Rail)


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

(2 customer reviews)

Only 2 left in stock

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Frequently Bought Together

Price for both: $213.94

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

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

  1. Braxton Hartle (verified owner)

    Great rails will buy again

  2. Robert Hubbard

    Been using these rails for years. Always solid.

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