Bravo Company Manufacturing 16" 300 BLK 1:7 Tapered Contour Barreled AR-15 Upper - 15" KeyMod KMR Alpha Rail

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NOTE: Does not include a bolt carrier group or charging handle.

Expect nothing less than professional grade weaponry from BCM. This Bravo Company Manufacturing Barreled Upper Receiver is built around a 41V50 chrome moly vanadium steel barrel. This MIL-SPEC steel is stronger and will outlast most materials found in the commercial market.

The BCM KMR ALPHA Handguards are constructed from 100% aluminum. Hardcoat anodized for an anti-reflective, corrosion resistant finish. KeyMod mounting slots on seven sides, plus a continuous Picatinny rail provide an enormous amount of space for all your favorite accessories.

  • 16” 41V50 chrome moly vanadium steel tapered barrel with Manganese phosphate finish
  • Chambered in 300 BLK with 1:7 twist rate
  • 5/8x24 BCM Comp Mod 1 
  • Chrome lined chamber and bore
  • High pressure tested and magnetic particle inspected
  • M4 feed ramps
  • T-Marked Picatinny rail
  • 15” BCM KMR ALPHA KeyMod Free Float Handguard
  • (1) 3” Picatinny rail section
  • (1) BCM KeyMod sling mount

Notice from the manufacturer:

“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.”

300 AAC Blackout
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Barrel CoatingManganese Phosphate
Barrel ContourTapered
Barrel Length16
Barrel LiningChrome
Barrel Material41V50 Chrome Moly Vanadium Steel
BrandBravo Company Manufacturing
Caliber Gauge300 Blackout
FinishHardcoat Anodized
Gas System LengthCarbine
Gas System TypeDirect Impingement
Handguard15 in Bravo Company KeyMod Alpha KMR
Muzzle DeviceBCM Mod 1 Compensator
Thread Pattern5/8 X 24
Twist Rate1:7
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to

Ratings & Reviews

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Amazingly Accurate Upper ~ Incredible Quality Build.....

by -

I was fortunate enough to pick up two of these BCM 300 BLK Uppers when they were on sale. The fit & finish are exceptional & flawless. No tooling marks anywhere! Once mated to my BCM Lower, I hit the range. I was shooting both Sub & Super Sonic loads and both were "exceptionally" accurate. This BCM 300 is definitely a quality upper that is Match equivalent ~ Absolutely No Doubt. It shoots the tightest groups of any 300 I've shot. At No time did I experience any FTF's or FTE's. I was shooting Hornady AMAX 208-Sub & Corbon 125 MPR Poly-Super. The BCM BCG (purchased separately) cycled flawlessly. I honestly believe you would be hard-pressed to find a 300 BLK this accurate out of the box, with top-of-the-line parts, beautifully finished, operates flawlessly, at this price?