Radical Firearms AR-15 16" 12.7x42mm Carbine - 15" M-LOK MHR Rail

Manufactured by Radical Firearms
SKU: FR16-12.7X42-15MHR3
MPN: FR16-12.7X42-15MHR
Manufactured by Radical Firearms
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Out of Stock

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

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.
•A copy of your order/invoice as well as the current FFL license for your local dealer must be emailed to ffl@primaryarms.com.
•If this firearm includes magazines with a capacity higher than 10 rounds it may not be legal in your state. We will review all order prior to shipping and if your state does not allow the included magazines they will be removed.



If you want to step into the world of big bore AR-15’s whether it is for hunting or having fun at the range, check out the Radical Firearms AR chambered in 12.7x42mm. This AR-15 style rifle features a 16” barrel made from 4140 chrome moly vanadium steel that has a durable Melonite finish inside and out. This type of finish is harder than chrome without the negative effects on accuracy that chrome lining can cause. The HBAR profile barrel uses a carbine length gas system to ensure that the bolt cycles every time. This complete AR-15 rifle includes the Radical Firearms M-LOK Hybrid Rail system that offers many features over standard handguards. This 15” free float handguard has a full length picatinny top rail for mounting optics and iron sights. The sides and bottom of this rail only have picatinny rails at the muzzle end to help reduce weight. It also has M-LOK attachment slots, so you can further customize where you want to place your lights, grips, or other accessories. This 12.7x42 AR from Radical Firearms is an affordable way to enjoy the hunting benefits of a big bore semi-automatic rifle.

  • 16" 4140 chrome moly vanadium steel HBAR barrel
  • Chambered in 12.7x42mm with a 1:20 twist rate
  • M16 cut bolt carrier group with Melonite finish
  • BCG high pressure tested and magnetic particle inspected
  • Standard charging handle
  • Oversized ejection port – no dust cover
  • Custom Radical Firearms Panzer Brake
  • 15" free float Radical Firearms M-LOK MHR rail
  • Gen 3 rail mounting system
  • Extended magazine release and bolt release
  • Ambidextrous safety selector
  • Adjustable MFT Minimalist stock
  • Type III anodized receivers
  • Includes aluminum magazine
  • Made in the U.S.A. in Stafford, Texas!

In order to tame the recoil of this large caliber, Radical Firearms includes their Panzer muzzle brake which directs expanding gasses to the sides of the rifle. It also comes with a 6-position Mission First Tactical Minimalist stock, so you can adjust the length of pull to your preference. The forged aluminum receivers are class III anodized to Mil-Spec and come installed with Mil-Spec parts. The ejection port has been enlarged to accommodate the large casings and the dust cover has been removed. All you need is to attach your favorite sights and you are ready for the range.

Radical Firearms offers law enforcement grade hardware. Crafted with quality materials and covered by their lifetime warranty, Radical Firearms is an outstanding choice for any budget.
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Barrel Coating
Barrel ContourHBAR
Barrel Length16
Barrel LiningMelonite
Barrel Material4140 Chrome Moly Steel
BrandRadical Firearms
Caliber Gauge12.7X42mm
Gas System LengthCarbine
Gas System TypeDirect Impingement
Handguard15 in Radical M-LOK MHR Rail
Muzzle DeviceMuzzle Brake
Twist Rate1:20

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

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Great weapon