BCM® MCMR-9 (M-LOK® Compatible* Modular Rail)

MSRP: $225.00
Your Price: $211.95
(You save $13.05 )
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BCM® MCMR-9 (M-LOK® Compatible* Modular Rail)

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 5.9 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 9.4"

Designed to be used with mid length with a FSB or a pistol length or carbine length gas system with a low profile gas block.


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


Bravo Company MFG, Inc. US Patent 8904691

Please note: Nylon/Polymer Picatinny rail sections are for NON-load bearing accessories only (grips, hand stops, light mounts). For load bearing accessories (bipod mounts, sling mounts, vertical grips, barricade supports), we recommend aluminum Picatinny rail sections. Do NOT exceed 20 in/lbs. when securing fasteners on Polymer accessories. Aluminum Picatinny rail sections may be torqued to 30 in/lbs.

*M-LOK® is a registered trademark of Magpul Industries Corp.


***This product contains chemicals/materials known to the State of California to cause cancer and other reproductive harm. To learn more, visit www.p65warnings.ca.gov.***

22 Reviews

  • 5
    Mcmr rail

    Light weight and feels strong. Can’t wait to see what it can take

  • 5
    Precision manufacturing at its finest!

    Over a couple decades, I’ve used numerous rails on AR15 build projects. This rail stands above the rest in quality and precision. The anti rotation devise fits engages the upper receiver in an area that is common on all receivers, the base of the picatinny rail, very smart. Other brands will only interface with mil- spec receivers. Excellent job BCM

  • 5
    Excellent quality

    Love the quality, feel, and appearance. As usual, every purchase is with absolute confidence.

  • 5
    Yeah Buddy!!!

    This was my first online order from Bravo Company and I must say I’m impressed. Shipping was quick and the rail arrived without any scratches or other damage. Now for the fun part, the parts included with the rail are top notch and install with ease, including the barrel nut which comes with a spanner. I’m not big on instructions usually, but I recommend reading over them when placing the rail over the barrel nut. This was a bit of a beast, and did take some time after warming the parts. The screws were just a tenth or so off, and required a little persuasion to clear the barrel nut. Completely worth it in the end, you can’t go wrong with this rail and it looks amazing.

  • 5

    It’s BCM what else do you say

  • 5
    Customer review

    Best on the market, hands down.

  • 5
    BCM MCMR-9 (M-LOK® Compatible* Modular Rail)


  • 5

    Its a great handguard. Super tight fir, but not a problem getting it onto my quarter circle 10 upper chambered in 9mm. I recommend it all my friends. And its $100 cheaper than geissele!

  • 5
    BCM MCMR-9

    As good as product as always! Easy install and great product as always!