Home > Upper Receiver Groups AR15 : LMT, BCM, Stag Arms >

  BCM Standard 9" 300 BLACKOUT Upper Receiver Group w/ BCM KMR-Alpha 8" Handguard (NFA)

BCM Standard 9" 300 BLACKOUT Upper Receiver Group w/ BCM KMR-Alpha 8" Handguard (NFA)
300 BLACKOUT Barreled Upper Receiver Group with BCM KMR-A8


 
Alternative Views:


List Price: $870.00
Our Price: $639.95
You save $230.05!


Stock Status:In Stock
Product Code: BCM-URG-300BLK-9-KMR-A8

Add BCM® Bolt Carrier Group with Upper Group

Add BCM® Bolt Carrier Group?*:
   The one and only BCM® milspec Bolt Carrier Group!
Charging Handle Options

  

Qty:  
Description FAQs
 
All NFA Rules Apply

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 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.

Average Customer Review: 5 of 5 Total Reviews: 67 Write a review.

  0 of 0 people found the following review helpful:
 
Great upper September 22, 2016
Reviewer: shawn mcdonald from Rochester, MI United States  
Matted this to my Mega SBR lower and it makes a great rifle.  I tried 300blk a few years ago and the upper left a bad taste in my mouth (lots of chambering issues).  When BCM entered the market I had to give it a try again.  I have only about 500rds through it but it has run perfect.  With an aimpoint The accuracy is very good for a SBR.

Was this review helpful to you?

  0 of 0 people found the following review helpful:
 
9" 300 AAC Upper September 22, 2016
Reviewer: Bryce Rogers from Terre haute, IN United States  
I purchased the BCM upper for this cartridge for the absolute belief that you had made it reliable and as perfect to our current machining ability or that you wouldn't have made the product at all.  Thus far, I am only 100 rounds into it and I have not been let down.

Was this review helpful to you?

  0 of 0 people found the following review helpful:
 
Outstanding September 22, 2016
Reviewer: John from Cleveland  
You get what you pay for. I originally bought a cheep 300 AAC pistol upper from a discount web site, and what do know, I had major problems with it and had to return it. This one is the complete opposite. It works and looks flawless. Shoots 1" groups at 50 yards, I couldn't be happier. If your interested it a 300 pistol definitely get this one. You will forget about  the few extra bucks you paid but you'll always know your gun sucks if you buy a discount POS. Plus I consider this one to be a good value for the high quality your getting.

Was this review helpful to you?

  0 of 0 people found the following review helpful:
 
Completely satisfied! September 22, 2016
Reviewer: Michael M from Milwaukee, WI United States  
I've been using BCM products for years so when I decided to get into 300 blackout they were the obvious choice for me. As always you can see the quality as soon as it arrives....which was quick thanks the great crew at BCM. But obviously how it performs is what really matters and there's no disappointment there. I've used it with and without a SilencerCo Omega with 110gr to 220 grain rounds and haven't had a single malfunction.  For the time being I've been limited to a 100yd range and I've been very pleased with the accuracy.  The BCM KMR rail system is very light and extremely comfortable, I'd happily switch out my quad rail equipped AR's for these. Like the title says I'm completely satisfied since BCM delivered nothing less than I've become accustomed to from them.

Was this review helpful to you?

  0 of 0 people found the following review helpful:
 
Perfect September 22, 2016
Reviewer: Anonymous Person from Houston, TX United States  
This was the perfect upper for my SBR blackout build running a suppressor. Everything is built just right and works how it should. What else can I ask for?

Was this review helpful to you?

View All Customer Reviews

Browse for more products in the same category as this item:

Upper Receiver Groups AR15 : LMT, BCM, Stag Arms
Upper Receiver Groups AR15 : LMT, BCM, Stag Arms > BCM® Upper Receiver Groups
Upper Receiver Groups AR15 : LMT, BCM, Stag Arms > BCM® Upper Receiver Groups > BCM Upper Receiver Groups with Standard Barrels
Upper Receiver Groups AR15 : LMT, BCM, Stag Arms > BCM® Upper Receiver Groups with KMR (KeyMod™) Handguards
NEW** Products - Just In
Upper Receiver Groups AR15 : LMT, BCM, Stag Arms > BCM Upper Receiver Groups 300 BLACKOUT
Upper Receiver Groups AR15 : LMT, BCM, Stag Arms > BCM® Upper Receiver Groups with KMR (KeyMod™) Handguards > BCM® Upper Receiver Groups with KMR *ALPHA* (KeyMod™) Handguards
Upper Receiver Groups AR15 : LMT, BCM, Stag Arms > 9", 10.5" Carbine Upper Group