Modern Armory Duty Grade Barrels
are 100% USA Made and are individually inspected to ensure it meets its
required specifications. They are manufactured from 4150 Chrome-moly vanadium
steel and finished with a Nitride finish for extra durability.
Barrels come with a Lifetime Guarantee to be free from
- 8.5" Standard Profile
- .300 Blackout
- 4150 CrMoV (Chrome Moly Vanadium per MIL-B-11595E)
- 1:7 Twist Rate
- QPQ Nitride Finish
- QPQ Nitride Coated/ Mil-Spec 86L20 case hardened M4 Feed
- 5/8 - 24 Threaded Muzzle
- Pistol Gas System
- Gas port .093" diameter
- .750 Gas Block System
- Dimpled for Gas Block Set Screw.
- High Pressure Tested (HPT)
- Magnetic Particle Inspected (MPI)
- Weights 19oz
*Lifetime Guarantee covers manufacturing defects
in materials and workmanship, regardless of the age of the product, but
it does not cover normal wear and tear. Wear and tear is damage that
naturally and inevitably occurs as a result of normal use.
The use of reloaded or remanufactured ammunition will void the warranty, due to the unpredictability of the standards (SAMMI/NATO) adhered to, since reloads of poor quality ammunition may not meet (SAMMI/NATO) specifications, may exceed limits, and therefore may be unsafe.
ITAR: International Traffic in Arms Regulations Controlled Product