BCM® MCMR-15 (M-LOK® Compatible* Modular Rail)

MSRP: $210.00
Your Price: $199.95
(You save $10.05 )
(77 reviews) Write a Review
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BCM® MCMR-15 (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 9.2 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 15.0"

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")


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.


WARNING: This product can expose you to chemicals including Cumene and Titanium Dioxide, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov

***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.***

77 Reviews

  • 5
    Love it!

    This handguard is solid and clearly well-made. Installation was simple and straightforward, but make sure you follow the provided instructions. The cross-bolt clamping mechanism is ingenious! This thing locks up solid and isn't going anywhere.

  • 5
    Best handguard ever!!!

    Used these on multiple builds, I love them and they fit very well and super comfortable on the hand. Definitely recommend buying

  • 5
    15' MLOK

    They don't make a better, tighter fitting hand guard.

  • 5
    Exactly what I was looking for.

    This hand guard fits the vision i had in my head perfectly. It's low profile, low weight, incredibly durable, and looks like it spits freedom. The only way BCM could improve this handguard's freedom factor is by painting it red white and blue. I recommend this hand guard to anyone who enjoys their freedom, liberty and happiness. 10/10 made me happy.

  • 5

    This rail is very slim coming in at just 1.5 inch in diameter, without sacrificing strength.

  • 5
    BCM® MCMR-15 (M-LOK® Compatible* Mod Rail)

    I love it - extremely well designed, extremely well made

  • 5
    Mcmr 15

    Great product! Easy to install. Bomber!

  • 4
    Free Float Hand Rails

    Very nice handguard with nice design. The rail is very lightweighted and it easy to put together. The rail come with all the tools you need to assemble. The only issue I have is, that it come as non-polish finish. It will be nice if they add the option with polish finish like the Daniel Defense polish rails. I would have gave it 5 stars. Overall it well nice look and design with BCM logo on the side

  • 4
    Free Float Handguard

    The handguard is a nice design. Very well put together. The rail is very lightweighted and it come with all the tool you need to assemble your handguard. The only issue I have is the finish is like a Non-Polish finish which make it easier to scratch up. It will be nice if they can add a more polish finish feel like Daniel Defense Rails. Overall a very nice design with BCM writing on the side.