BCM® MCMR-10 (M-LOK® Compatible* Modular Rail)

MSRP: $190.00
Your Price: $179.95
(You save $10.05 )
(37 reviews) Write a Review
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BCM® MCMR-10 (M-LOK® Compatible* Modular Rail) Handguard

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 6.6 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 10.5"

Designed to be used with pistol length, carbine length, or mid 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.***

37 Reviews

  • 5
    Awesome Handguard

    Posted by Victor on Dec 24th 2020

    Very high quality fit and finish. Great inclusion of the wrench and sling QD mount point. Looks great, feels great, is VERY stable. I just wish I could afford the ammo to shoot it as much as it deserves.

  • 5
    BCM MCMR 10” Rail

    Posted by Ty on Dec 21st 2020

    Very happy with this product! I kept reading reviews saying how hard it is to get the rail over the barrel nut but it was quite easy when following the directions. A hair dryer and light taps with a soft mallet is all it took. Install was a breeze and the fit and finish is great! I did add some BCM MLOK covers to help thicken the feel and add some grip.

  • 5
    Unmatched Quality

    Posted by Morgan Sides on Dec 21st 2020

    BCM continues to create parts that are top tier in quality, fit and craftsmanship. This was placed on my new 11.5 build and install was smooth.

  • 5
    Stop Messing Around and get the best !

    Posted by Manny Cortes on Dec 20th 2020

    The BCM is built for battle and tough as hell, I am very happy with the quality of this product and the extra QD and rails that are included with the handguard.....The best purchase I made for 2020 !

  • 5
    MCMR-10 mlok

    Posted by Logan Hose on Dec 6th 2020

    Love it. Highly recommend. Fits perfect with 11.5 barrel.

  • 5
    100% THE Hanguard

    Posted by Thomas Valenza on Nov 21st 2020

    This is the only handguard I'll ever purchase again, it's that simple.

  • 5
    Excellent quality

    Posted by Jason on Nov 10th 2020

    Glad I went bcm over other brands.

  • 5
    It's real good

    Posted by Will on Nov 5th 2020

    Solid yet light, very easy to install. get it bois

  • 5
    It's BCM

    Posted by Travis on Nov 4th 2020

    Excellent product. If you have not installed one of these before be sure you have the correct tools including a heat gun. The handguard slips over the included barrel nut.The fit is VERY snug.