BCM® MCMR-8 (M-LOK® Compatible* Modular Rail)

MSRP: $180.00
Your Price: $171.95
(You save $8.05 )
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BCM® MCMR-8 (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 5.3 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 8.14"

Designed to be used with 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.***

25 Reviews

  • 5
    8" m-lok

    Very tight fit, but thats what you want! Looks fantastic with 9" 300blk barrel. I could not be more pleased with the outcome! BCM! BCM! BCM!

  • 5
    Fit was perfect and very easy to install

    This handguard is awesome. Went on very easy and looks and feels great.

  • 4

    Very nice quality Handguard, easily installed. I subtracted a star, perhaps unfairly, for the color. its a lighter shade than most of my other components.

  • 5
    Best Handguard

    This was my first BCM handguard I've purchased and I couldn't be happier. A great quality product with the perfect look. Fit well and had no issues with install.

  • 5

    You can always expect a quality product from bcm their slim rails are no exception they’re sturdy and rugged and will take any abuse you throw at it

  • 5

    I love it, it fits perfectly, it is my opinion that this is superior to the delta ring AR builds of the past

  • 5
    Great product

    Very happy with this handguard and other BCM products.

  • 5
    Customer review

    Quality product - fit and finish is perfect and as expected from BCM. Perfect addition to my 300 Blackout pistol build. BCM is the best

  • 5
    Just what the Doctor ordered

    Beautifully crafted!!! fit and finish was flawless on delivery not to mention it was expedited very quickly and I had it in hand in 2 days my whole order RTFM a hair dryer works perfectly. Thanks Bravo Company rock and roll