Radical Firearms 12.7x42mm Nitrided 4150 Barrel - 16"

Manufactured by Radical Firearms
SKU: B16CV127X42-120
MPN: B16CV127X42-120
Manufactured by Radical Firearms
(0) No Reviews yet

In Stock

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

We are fully staffed and processing orders. Standard orders are shipping in approximately 3 business days or less. FFL orders take approximately 7 business days if you can provide us an actively receiving FFL location.



The Radical Firearms 12.7x42mm barrel is a great option for building a big bore AR-15 for hunting or having fun at the range. This 12.7x42mm barrel is constructed from 4150 Chrome Moly Vanadium steel with a durable Nitride finish to keep it protected for many years to come. The heavy .50 caliber projectile is stabilized by the 1:20 twist rate and the carbine length gas system keeps your AR running reliably. This big bore AR barrel features a thick profile and .936 gas block diameter and the 49/64x20 thread pitch is compatible with the Radical Firearms Panzer brake. This large brake is great for reducing recoil and muzzle rise of this large caliber. If you are in the market to build a hog hunting AR-15, the Radical Firearms 12.7x44mm 16” barrel is a great first start. Compatible with most standard AR components, you can build your rifle with a wide range of aftermarket parts.

  • 16” 4150 Chrome Moly Vanadium steel
  • Heavy profile
  • Nitride finished
  • Chambered in 12.7x42mm
  • 1:20 twist rate
  • 49/64x20 thread pitch
  • Compatible with RF Panzer Brake
  • Carbine length gas system
  • .936” gas block journal

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.
See More


Barrel CoatingSalt Bath Nitride
Barrel ContourHeavy
Barrel Length16
Barrel LiningSalt Bath Nitride
Barrel Material4150 Chrome Moly Steel
BrandRadical Firearms
Caliber Gauge12.7X42mm
Feed RampsM4
Gas Seat Diameter.936
Gas System LengthCarbine
Thread Pattern49/64 X 20
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

No reviews available

Be the first to Write a Review