BCM® MK2 Standard 9" 300 BLACKOUT Complete Upper Receiver Group w/ MCMR-8 Handguard

MSRP: $1,090.10
Your Price: $806.49
(You save $283.61 )
(24 reviews)
SKU:
BCM-MK2-URG-300BLK-9-MCMR-8
Caliber:
300 BLK
Barrel Length:
9in
Barrel Style:
Standard
Handguard:
MCMR-8
Upper Receiver:
MK2
Right hand side view of BCM® MK2 Standard 9" 300 BLACKOUT Complete Upper Receiver w/ MCMR-8 Handguard.
Stock Status:

Out of stock

About the BCM® MK2 Standard 9" 300 BLACKOUT Complete Upper Receiver w/ MCMR-8 Handguard

Features:

  • Continuous taper barrel profile designed for optimal weight, balance, and performance.
  • Barrel profile fluted toward the rear near chamber area - Increases strength and heat dissipation.
  • Tapered barrel profile out front, for easier maneuverability.
  • No sharp handguard cap shoulder for improved barrel harmonics and improved accuracy.
  • Muzzle threaded in standard 30 cal (5/8x24)

Includes:

  • MCMR-8 Handguard
  • MCMR-SM (MCMR Sling Mount)
  • One 3" Picatinny Rail SectionIncludes
  • BCM® Comp Mod 1 - 762/300 BLK

Featuring BCM’s Patented MK2 Upper Receiver

This proprietary design offers enhanced rigidity over the USGI product.  The increased rigidity limits barrel deflection which aids in consistency/accuracy.   Less flex also reduces premature damage, wear, and failure of bolt lugs from misalignment.   A gas expansion chamber is machined above the charging handle track, combined with dual vents machined at the rear (each side, above charging handle latch) help to redirect and vent gas away the shooters face. U.S. Patent Numbers: 10670355, 10677549, D888182
 
BCM® has taken great care to ensure the best possible performance and interchangeability. However, due to the large operational range of 300 Blackout ammunition in the market place, BCM® cannot guarantee function will all ammunition types in all conditions. These barrels were designed to run with a H3 buffer with high velocity ammo. If running subsonic ammunition, it is recommended to run your suppressor and a carbine buffer.
 
Fine tuning may be required in limited instances based on ammo and buffer choices that work best for the desired application. BCM® also recommends running the Crane O-ring (provided with all BCM® Bolt Carrier Groups) over the extractor with 300 Blackout.

Product details:

  • Caliber: 300 Blackout
  • Barrel Length: 9"
  • Barrel Material: 11595E Spec Steel
  • Barrel Finish: Manganese Phosphate (Mil-Spec A-A-59267)
  • Bore & Chamber: Chrome Lined
  • Weight: 2.2 lbs
  • Twist Rate: 1:7
  • Gas System: Pistol
  • Muzzle Device: BCM® Comp Mod 1 (762/300BLK)
  • Muzzle Threads: 5/8x24
  • Handguard: MCMR-8 

Shop Related Products:

Want to see more upper receivers? Click the links below to view more BCM® AR complete uppers!

 

Bravo Company builds: Life Saving Tools™
 
Copyright 2023 Bravo Company MFG, Inc.
***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.***

24 Reviews

  • 5
    BCM .300 AAC Blackout 9.5" upper receiver

    Beautiful peice. I love it. I couldn't ask for faster shipping. Thank you for your amazing service. I will be purchasing more of your products in the near future.

  • 5
    LOVE IT!!!!

    Best upper I've ever gotten! strong, light and compact! With my suppressor the length is perfect!

  • 5
    Runs flawlessly suppressed

    Purchased this upper with BCM’s bcg along with a standard complete BCM lower receiver. I was curious how this would run suppressed with the standard H1 buffer & carbine spring that came with the lower receiver. BCM really knows how to gas their rifles because running S&B subsonic 200 grain it runs perfectly. Spent casings discharge right at the 3:00 position. Locks back on last round every time. Great job BCM.

  • 4
    Typical great quality but missing something

    All my BCM products are very high quality as is this. I held off awhile because I think the cost is a lot for what you physically get but I did not want to settle for an inferior competitor product. I was disappointed that the normal it and stickers that came with the rest of my BCM uppers did not come with this. They must be getting cheap during Covid.

  • 5
    Bcm mk 2 .300 blackout 9inch upper

    Very sleek and light upper for my pdw build. Fit and finish are very good.

  • 5
    9 inch 300 blk

    Super impressed all around with the quality and functionality of this 300 blackout upper. I received it in one day. the finish is flawless and the upper fit perfectly as it should. I'm definitely a bravo company customer for life after this purchase.