Radical Firearms Blue Line 5.56 NATO 1:7 Mid-Length SOCOM Rifle - 15" M-LOK MHR Gen3 Rail - 16"

Manufactured by Radical Firearms
SKU: FR16-5.56SOC-BL-15FCR
MPN: FR16-5.56SOC-BL-15FCR
Manufactured by Radical Firearms
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Items that are regulated by the ATF have restrictions and requirements: 
•Your entire order will ship only to a Federal Firearm License holder.
•Current processing time is approximately 14 to 16 days.
•Please contact your local FFL prior to placing your order to ensure they are still accepting transfers. Due to Covid-19 many are no longer open
•A copy of your order/invoice as well as the current FFL license for your local dealer must be emailed to ffl@primaryarms.com.



The Radical Firearms Blue Line 16" 5.56 NATO SOCOM Rifle is law enforcement grade hardware. Crafted with quality materials and covered by Radical’s lifetime warranty, this MIL-SPEC rifle is an outstanding choice for any budget. Just add your favorite iron sights or optic, then head for the range! It features a 16 inch SOCOM profile barrel with a 1:7 twist rate and a mid-length gas system with an H1 buffer for reliability and less recoil. The 15" FCR Gen 3 handguard features M-LOK slots for easily and securely attaching lights and other accessories. Outfitted with B5 Systems furniture, this AR-15 is ergonomic and more comfortable to use than rifles with standard M4 furniture. Every Blue Line rifle goes through a strict QA process to ensure it is up to military and law enforcement standards.

  • 16" 41V50 chrome moly vanadium steel SOCOM barrel
  • Chambered in 5.56 NATO with a 1:7 twist rate
  • Mid-length gas system
  • M16 cut bolt carrier group with Melonite finish
  • BCG high pressure tested and magnetic particle inspected
  • Forged 7075-T6 receivers
  • Standard charging handle
  • MIL-SPEC single stage trigger
  • 1/2x28 A2 flash hider
  • 15" Radical Firearms M-LOK FCR rail
  • Gen 3 rail mounting system
  • B5 Systems stock and pistol grip
  • H1 heavy buffer
  • Made in the U.S.A. in Stafford, Texas!

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 accessories.
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Barrel CoatingMelonite
Barrel ContourSOCOM
Barrel Length16
Barrel LiningMelonite
Barrel Material41V50 Chrome Moly Vanadium Steel
BrandRadical Firearms
Caliber Gauge5.56 NATO
Gas System LengthMid-Length
Gas System TypeDirect Impingement
Handguard15 in M-LOK Rail
Muzzle DeviceA2 Flash Hider
Thread Pattern1/2 X 28
Twist Rate1:7

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