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300 Blackout Pistol Upper (10.5" SS Barrel & M-Lok Handguard) AR 15 Complete Pistol Upper
$499.95 $389.95 (You save $110.00)
Out of Stock 300 Blackout Pistol Upper (10.5" SS Barrel & M-Lok Handguard) AR 15 Complete Pistol Upper -
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SKU: UA300PHB10.517(SS)-(10)MLOK

Our 10.5" 300 Blackout Pistol Upper provides the perfect balance of a compact profile and superior accuracy and weight savings. The skeletonized, full-length M-Lok handguard shaves additional heft and offers some serious aesthetic points, on top of providing plenty of rail estate for attachments. A free-float design further improves accuracy while a Pistol gas system and 1:7 twist rate ensure this 300 Blackout Upper reliably handles supersonic and subsonic 300 Blackout loads. Topping it all off is an industry-leading 416R stainless barrel that makes this Pistol Upper perhaps the most accurate 300 Blackout Upper you'll find in a pistol configuration.

The Most Accurate 300 Blackout Pistol Upper

The words 'accuracy' and 'pistol upper' don't often go together, so we sought to fix that. We combined a best-of-both-worlds 10.5" barrel length with a heavy profile and 416R stainless steel to offer the most accuracy possible. If there‰۪s a 300 Blackout Pistol Upper that might hit 1 MOA accuracy, you're looking at it. Everything is manufactured under ISO 9002 quality control standards, and all rifling is CNC cut and heat-treated to a hardness rating of RC 28 to 32. This guarantees the most accurate barrel possible, with the most barrel life and wear resistance.

300 Blackout Pistol Barrel Features:

  • 300 AAC Blackout Chamber
  • 10.5" with Polished Finish
  • 416R Stainless Steel
  • Heavy Profile
  • 1:7 Twist Rate
  • 5/8 x 24 Thread Pitch
  • A2 Birdcage Flash Suppressor

300 Blackout Receiver Features:

  • 10" Free Floating M-Lok Handguard
  • Pistol-Length Gas System (0.125 Hole)
  • Low Profile Gas Block (0.750)
  • M4 Flat Top Upper
  • M4 Feed Ramps
  • Pistol Gas Tube
  • Charging Handle
  • Chrome-lined BCG

No FFL Transfer Required!

This ready-to-fire 300 Blackout Upper requires zero FFL transfers or paperwork! It is not legally considered a firearm and so we can ship it straight to your front door, no red tape necessary. That means you don't have to deal with that slow PICS check at your local gun store. Just open the box, slap the upper to your 80 lower project or any other AR pistol lower, and you're set.

300 Blackout Pistol Upper (10.5" SS Barrel & M-Lok Handguard) AR 15 Complete Pistol Upper

$499.95 $389.95 (You save $110.00)
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Free Shipping on all orders $250+


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