BCM® Standard 9" 300 BLACKOUT Upper Receiver Group w/ KMR-A8 Handguard

MSRP: $984.50
Your Price: $731.45
(You save $253.05 )
(97 reviews) Write a Review
300 BLK
Barrel Length:
Barrel Style:
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BCM® 300 Blackout Upper Receiver Groups

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 KMR-A8 KeyMod™ Handguard.

Includes KMSM (KeyMod™ Sling Mount)

Includes One 3" Picatinny Rail Section

Includes BCM® Comp Mod 1 - 762/300 BLK

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 carbine buffer with subsonic ammo and a H3 buffer with high velocity ammo. 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.

  • 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: KMR-A8

Copyright 2015 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.***

97 Reviews

  • 5
    50 yd zero/200 yd shots

    50yd zero was 3/4 moa after final siteing / at 200 yds I was at 1.75 MOA one group was .75 MOA, that's insane! Extremely happy with that out of a 9" barrel using Primary Arms 3x Prism that wasn't very easy at 200 yds. GREAT RIFEL!

  • 5
    Great Upper

    Flawless so far. I love it!

  • 5
    Great accuracy

    I didn't buy this upper to shoot 100 yard groups but when I did I was very surprised at the results! It shot consistent 3/4 inch groups at 100 yards with quality hunting ammo and about 1 1/4 with bulk ammo.

    Like all BCM products, this is a high quality upper and worth every penny!

  • 5
    Excellent so far

    I already own Colt and Daniel Defense rifles, after much research and recommendations decided to give BCM a try. Excellent performance so far (only a couple hundred rounds). It is lighter than I expected, finish and assembly is flawless, very fast shipping and excellent customer service I will definitely buy from BCM again and would recommend them to anyone considering.

  • 5
    300 shorty

    Love this 300blk k-mod upper. Exactly what I was looking for. Ergonomic and perfect fit.

  • 5
    Excellent value for the money.

    Top quality for this item, couldn't be happier with this purchase. Functions flawlessly per the recommendations for both subsonic and supersonic standard loads. Thank you Bravo Company for the extra goodies in the box!!

  • 5
    300 Blackout Upper

    It’s all about quality and functionality. This BCM upper proves both. You guys have earned my business. Thanks

  • 5
    9” 300 Blackout

    Excellent craftsmanship. This upper was very balanced, the coating is flawless and I love the enhanced barrel. I will be a BCM customer from now on. Thank you!

  • 5
    Customer review

    As always, great quality and fast shipping. Thank you.