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

MSRP: $190.00
Your Price: $179.95
(You save $10.05 )
(12 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.***

12 Reviews

  • 5
    Perfect Product

    Posted by Joshua R. on Aug 20th 2019

    Originally had an upper put together and didn't really understand what I needed for rail length. Thankfully BCM offers a lot of their hand guards in various lengths. The one I purchase was the 10" length for the barrel that I have is a Ballistic Advantage 11.3". It's a close fit, but it still has clearance for me to swap out muzzle devices if need be. Communication, notification, and shipping services were superb.

  • 5
    Customer review

    Posted by Mike Dunaway on Jun 25th 2019

    Review body is empty

  • 5
    Customer review

    Posted by anonymous on Jun 4th 2019

    Review body is empty

  • 5

    Posted by Ty on Jun 4th 2019

    Great product. Light, slim, strong. Tight fit makes it a bit of work to get on, but once on it locks in rock solid. Bravo makes good shit and they ship fast.

  • 4
    Great for AR Pistol Build

    Posted by M. Oakes on Jun 4th 2019

    I did a recent pistol build with a Aero Precision upper/lower, a Ballistic Advantage 11.5” barrel and all the other high end trigger, pins, etc...so, I wanted the best handguard I could find.
    Well, it turned out great in the end, but there were a few obstacles during the build. First was that one of the two screws that’s included was damaged (BCM took care of with no questions asked...great customer service!) The second was the fit over the barrel nut, which was incredibly tight. The project was finished and looks great, but getting the handguard off will be next to impossible...if ever needed.
    The MLOK rail, length, overall build quality and customer service are outstanding and will bring me back. Just wish it wasn’t so tight that it needed to be assembled with a rubber mallet...literally.

  • 5
    Customer review

    Posted by anonymous on May 8th 2019

    I haven't installed it yet but was completely satisfied with the quality when I unpacked and inspected everything.

  • 5
    Love this Rail

    Posted by Scott Iwan on Apr 9th 2019

    Quick and easy install. Came with all the tools you basically need. I’d for sure follow the install instructions and grease up the end that’ll go over the barrel nut because it can be super tight. Very modular and I love the design. Would recommend to anyone.

  • 5
    Utopia has finally arrived

    Posted by Adam McFarland on Apr 9th 2019

    I've been building an 11.5" SBR (utilizing BCM's ELWF barrel), and had to put it on hold waiting for this handguard/rail to become available. Well worth the wait. Coming from the old KAC RAS issued system, it is a true blessing.

  • 5
    Great Hand Rail

    Posted by Alfredo Escamilla on Sep 12th 2018

    Easy to install! It's light weight, durable, and works great with my setup.