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300 Blackout (16" Barrel & Keymod Handguard) AR 15 Rifle Upper Assembly
$549.95 $499.95 (You save $50.00)
300 Blackout (16" Barrel & Keymod Handguard) AR 15 Rifle Upper Assembly
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Free Shipping on all orders $250+!



What if you could just build a lower and add an already assembled 300 blackout upper receiver as easily as snapping in 2 takedown pins? Oh yeah, you can! Meet the 300 Blackout Upper Receiver assembly that’s truly plug-and-play ready.

It doesn’t get any easier than this complete an entire AR build in less than a day. It’s simply the most cost effective and serialization-free way for you to add a custom build to your collection.

The lightweight 13.5" keymod free-float rail allows scopes, tactical lights, hand grips, and many other accessories to be attached to your rifle quickly and efficiently. The AR-15 rile kit is an ideal weekend project for build kit beginners and the experienced, alike. By the end of the weekend, you’ll ensure your family is safe with a finished, unserialized 300 Blackout.

Upper Receiver Assembly Features:

This upper receiver is forged from 7075 – T6 aluminum and is hard coat anodized black for durability. Featuring M4 feed ramp cuts and T-marks, these upper receivers are made in the USA. Included in this 300 blackout upper assembly:

  • Barrel – 16” Mid-length Chrome Moly Vanadium (1:8” twist rate) (included & installed)
  • Upper Receiver - Forged 7075 Aluminum (included & installed)
  • Bolt Carrier Group (included & installed)
  • Low Profile Gas Block (included & installed)
  • Gas Tube (included & installed)
  • Flash Suppressor (included & installed)
  • Charging Handle (included & installed)

Specific Features:

  • Chamber: 300 AAC Blackout
  • Twist: 1:8’
  • Handrail: Anodized Black Keymod Rail
  • Total Length: 24.5”

This 300 Blackout Upper Assembly requires no additional engineering or manufacturing except slapping it onto your lower receiver. That’s it!

Please note: this 80% build kit requires that the builder completes the 80% lower receiver themselves, but that’s the fun part (and the only way to build your own AR-15 without the need of an FFL transfer or serialization).

No FFL Required Made In The USA Lifetime Warranty

300 Blackout (16" Barrel & Keymod Handguard) AR 15 Rifle Upper Assembly

$549.95 $499.95 (You save $50.00)
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Free Shipping on all orders $250+!

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Great Upper

Excellent workmanship pairs well with lower assembly.

Terry Hurley

"Met expectations and more, although not fully constructed, don't expect any less satisfaction. "

"Inspected upon arrival, fairly well packaged, upper completely clean inside and out, no signs of blemish. Can't wait to finish and play."



Wow great product and fast shipping looking forward to my next order