Radical Firearms 16" 5.56 NATO 1:7 Mid-Length SOCOM Complete Upper - 12" M-LOK FCR Rail

SKU: CFU16-5.56SOC-12FCR
MPN: CFU16-5.56SOC-12FCR
Manufactured by Radical Firearms
1 Reviews



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The Radical Firearms 16" 5.56 NATO SOCOM Complete Upper 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. Finish the build with your favorite lower receiver and sights, then head for the range!

The Radical Firearms FCR system is a slim handguard that provides the weight savings you want without sacrificing any of the mounting possibilities you require. This freefloat design offers a monolithic Picatinny rail and plenty of M-LOK attachment points for all your gear.

  • 16" 41V50 chrome moly vanadium steel SOCOM barrel with Melonite finish
  • Chambered in 5.56 NATO with a 1:7 twist rate
  • M16 cut bolt carrier group with Melonite finish
  • BCG high pressure tested and magnetic particle inspected
  • Standard charging handle
  • 1/2x28 A2 flash hider
  • 12" Radical Firearms M-LOK FCR rail
  • Made in the U.S.A. in Stafford, Texas!


Barrel Length16
Barrel Material41V50 Chrome Moly Vanadium Steel
BrandRadical Firearms
Caliber Gauge5.56 NATO
Gas System LengthMid-Length
Gas System TypeDirect Impingement
Handguard12 in Radical M-LOK FCR Rail
Muzzle DeviceA2 Flash Hider
Twist Rate1:7

Ratings & Reviews

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That'll do donkey, that'll do.

by -

Built a rifle for Christmas. Initially had to return it as there was a stripped out screw on the rail, as well as the rear take down pin hole was out of round causing excessive play. PA exchanged the item for one that was free of defects. My only complaint going forward was the slight wobble the upper had on my Spike's lower receiver. The fitment wasn't as tight as I would have liked it of been.