Ghost Firearms 10.5" 300 BLK 1:8 HBAR Prime Stainless Steel Barreled Upper - 9" M-LOK Rail - Black

Manufactured by Ghost Firearms
3 Reviews



Out of Stock



Out of Stock


NOTE: This upper assembly has a barrel less than 16” in length. These uppers are intended for use in AR pistol or legal short-barreled rifle builds. Other configurations may violate Federal law.

Does not include a bolt carrier group or charging handle.

Ghost Firearms makes a top-quality product, at an honest price. This MIL-SPEC 10.5" 300 BLK Barreled Upper is beautifully hardcoat anodized black. Complete this build with your AR pistol or registered SBR lower receiver, bolt carrier group, charging handle, and your favorite sights.

  • 10.5" 416R stainless steel HBAR barrel, pistol gas system
  • Chambered in 300 BLK with a 1:8 twist rate
  • 5/8x24 Ghost Firearms AXE Muzzle Brake
  • 9" free float Ghost Firearms M-LOK rail
  • Made in the U.S.A. in Daytona Beach, Florida!

Notice from the manufacturer:“Ghost Firearms test fires every custom upper to verify cycling. We do not guarantee cycling with all ammunition due to vast differences in the quality of ammunition. We will only warranty cycling with US made ammunition. We will not warranty cycling with imported, steel cased or reloaded rounds.”


Barrel CoatingStainless Steel
Barrel ContourHBAR
Barrel Length10.5
Barrel LiningStainless Steel
Barrel Material416 Stainless Steel
BrandGhost Firearms
Caliber Gauge300 BLK
Gas System LengthPistol
Gas System TypeDirect Impingement
Handguard9 in M-LOK Rail
Muzzle DeviceGhost Firearms AXE Muzzle Brake
Thread Pattern5/8 X 24
Twist Rate1:8

Ratings & Reviews

3 reviews

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"Economical" & "cheap" are not always synonymous.

by -

I've built 2 pistols with this upper and will be building a 3rd as soon as they come back in stock.<br>Quality is very good.<br>Accuracy is very good.<br>Price is very good.

Looks perfect!


Just received this upper, perfect out of the box. Will be assembling this afternoon using WMD bolt carrier group on Seekins lower with Geissele S3G trigger. Will update after testing. Thanks,PA, for the excellent service and fast shipping. I should be telling my wife how much I “saved” by shopping with Primary Arms...well, maybe not!!

Incredible quality!!

by -

I was somewhat skeptical of this upper due to the sale price, however I was blown away by the build quality and the machining of the parts. Even the muzzle Brake is engraved and perfectly aligned. I definitely recommend this upper!!