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  BCM Standard 12.5" 300 BLACKOUT Upper Receiver Group w/ BCM KMR-Alpha 10" Handguard (NFA)

BCM Standard 12.5" 300 BLACKOUT Upper Receiver Group w/ BCM KMR-Alpha 10" Handguard (NFA)
300 BLACKOUT Barreled Upper Receiver Group with BCM KMR-A10


 
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List Price: $890.00
Our Price: $659.95
You save $230.05!


Stock Status:In Stock
Product Code: BCM-URG-300BLK-12-KMR-A10

Add BCM® Bolt Carrier Group with Upper Group

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   The one and only BCM® milspec Bolt Carrier Group!
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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-A10 KeyMod Handguard.

Includes KMSM (KeyMod Sling Mount)

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: 12.5"
  • Barrel Material: 11595E Spec Steel
  • Barrel Finish: Manganese Phosphate (Mil-Spec A-A-59267)
  • Bore & Chamber: Chrome Lined
  • Weight: 2.5 lbs
  • Twist Rate: 1:7
  • Gas System: Pistol
  • Muzzle Device: BCM Comp Mod 1 (762/300BLK)
  • Muzzle Threads: 5/8x24
  • Handguard: KMR-A10





Copyright © 2015 Bravo Company MFG, Inc.

Average Customer Review: 5 of 5 Total Reviews: 7 Write a review.

  0 of 0 people found the following review helpful:
 
BCM 300 Black Upper Assembly June 13, 2016
Reviewer: Monte Stanloski from Allegan, MI United States  
BCM products are good looking, well made and milspec. Any more and you're paying for bling. Any less and you're buying junk. Barrels are the right steel, properly lined, the right twist, the right finish, have the M4 feed ramp and are HPT/MPI. This is the third upper assembly (with bolt/carrier group) I've purchased from BCM. Flawless every one. The only variable I've faced was selecting the proper buffer weight for the shorter barrels.

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  1 of 1 people found the following review helpful:
 
Can't wait to complete my SBR build with this uppe June 10, 2016
Reviewer: N. Harris from Virginia Beach, VA United States  
The quality of this complete upper receiver is 2nd to none. This is my first AR-15 build and after receiving such a great product from Bravo Company I'm spoiled now. Thank BCM.  Keep up the great work

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  0 of 0 people found the following review helpful:
 
Outstanding product March 21, 2016
Reviewer: Juan Ramirez from Houston, TX United States  
I like y'alls products

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  0 of 0 people found the following review helpful:
 
BCM Standard 12.5" 300 BLACKOUT Upper March 15, 2016
Reviewer: DK from AZ  
The upper I received is top notch as is their customer service!!!! Bravo Company will always have my business from now on!!!! Thank You

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  0 of 0 people found the following review helpful:
 
Finally December 11, 2015
Reviewer: CS from San Antonio, TX United States  
Had so much success with other BCM uppers and accessories that I waited for them to put out an upper in 300 Blackout.  Well worth the wait.  Quality products from first class people.

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