Radical Firearms 16" .458 SOCOM 1:14 Carbine Length HBAR Complete AR-15 Upper - 15" KeyMod FHR Gen3 Rail

Manufactured by Radical Firearms
SKU: CFU16-458SOC-15FHR3
Manufactured by Radical Firearms
2 Reviews
$448.36 $560.45

Out of Stock

NOTE: Limit 1 per household. Quantities exceeding 1 will not allow checkout.



The Radical Firearms 16" .458 SOCOM HBAR Complete Upper Receiver is a law enforcement grade, drop-in solution for your next AR build. Crafted with quality materials and covered by Radical’s lifetime warranty, this MIL-SPEC upper receiver provides an outstanding solution for any budget. Arrives at your door with the hard work done. Complete this build with your favorite lower receiver and sights then head for the range!

The Radical Hybrid Rail System offers a large 1.8” inside diameter that easily accommodates most suppressors. Lightening cuts along the rail reduce weight and aid in rapid cooling while KeyMod and Picatinny mounting points provide space for your favorite accessories. Features anti-rotation tabs, non-rotating QD sling mounts, and a tough hardcoat anodized finish.

  • 16" 41V50 chrome moly vanadium steel HBAR barrel
  • Chambered in .458 SOCOM with a 1:14 twist rate
  • M16 cut bolt carrier group with Melonite finish
  • BCG high pressure tested and magnetic particle inspected
  • Standard charging handle
  • Custom Radical Firearms Panzer Brake
  • 15" free float Radical Firearms KeyMod FHR rail
  • Gen 3 rail mounting system
  • Made in the U.S.A. in Stafford, Texas!
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AssemblyComplete Assemblies
Barrel Length16
Barrel Material41V50 Chrome Moly Vanadium Steel
BrandRadical Firearms
Caliber Gauge.458 SOCOM
Gas System LengthCarbine
Gas System TypeDirect Impingement
Handguard15 in Radical KeyMod FHR Rail
Muzzle DeviceRadical Firearms Panzer Brake
Twist Rate1:14

WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see www.p65warnings.ca.gov

Ratings & Reviews

2 reviews

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Best value in 458 SOCOM


I am impressed. Needed a good cleaning upon arrival to remove protective coatings. Functions perfectly. Doesn't like to feed Lead Flat nose bullets. All that said, this thing is EXTREMELY accurate. 1 ragged hole groups are common. Repeatable results every time. Has become my favorite AR Upper. I just swap it onto one of my 300 blk lowers, no additional setup needed.

Great uppers.


These uppers take a beating on social media but I have built 2 and both run flawlessly. Love the caliber and very impressed with Radical.