CORE® 300BLK Pistol Upper w/ Flash Can

$499.99 $319.99
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  • CORE® Lifetime Warranty
  • 7.5”, 300BLK, 4150 Nitride, 1:7 Twist Pistol Length Barrel
  • 7" Free Float M-LOK Rail System
  • KAK Flash Can
  • CORE® CNC Machined 7075-T6 Aluminum Forged Mil-Spec upper
  • CORE® V2 Charing Handle
  • Nickel Boron Coated Bolt Carrier Group


Dear Core Rifle Owners, What else about a product says as much about how highly a maker values their own work? It’s a mark of integrity, an assurance that the person who built it believes in it enough to stand behind it. Lawyers, legalese and fine print have no place in it. And we feel ours both stands on its own and speaks for itself. “The rifle you have just purchased has the simplest, most plainly written warranty you will ever read. There is no fine print. There are no exceptions. This CORE Rifle Systems firearm has been manufactured and assembled with painstaking care and precision by proud US Veterans, trained by the best there is. If anything is not up to your standard, accuracy included, if anything goes wrong, gets bent, broken, cracked, misaligned, tweaked, snapped or otherwise, simply contact one of our professionals and we will work to make it right. If you are the 5th owner and the rifle has seen 40k+ rounds, it simply… doesn’t… matter. We stand behind our products and we take care of our customers. That is our promise and your assurance.” We encourage you to take advantage of Core’s legendary, industry leading Lifetime Unconditional Warranty should you experience any issues in the function of your rifle. We would like to emphasize the importance of a thoroughly clean rifle for maximum safe and reliable performance. A clean rifle is necessary to properly diagnose any issues the rifle may have. If you would like to have the Core Warranty Department clean your rifle before diagnoses of the issue, we will happily do so. The standard cleaning fee is $35.00, if the rifle has extensive carbon build up or corrosion additional fees may apply. If you would like to send your rifle in clean, you will avoid any cleaning fees. You can also check out our Common Issue Resolutions to keep from sending in your rifle unnecessarily. That is the Core Difference. See. Shoot. Believe. Feel free to contact us at:, anytime with any questions or suggestions.