Caliber: .300 Blackout
Gas Seat: 0.750″
Gas Placement: Pistol-Length
Twist Rate: 1:7
Material: CMV Alloy
M4 Feed Ramps: Yes
Muzzle Thread Pattern: 5/8″-24
Finish: QPQ Nitride
JG-15 Upper receiver or any Mil-Spec AR-15 upper receiver
4150 Chrome Moly Vanadium
Made in the U.S.A.
Made from high-quality barrel blanks
All Jacob Grey barrels are guaranteed to give sub Minute of Angle (MOA) accuracy with match grade ammunition (By Manufacturer)
High pressure tested (HPT) and Magnetic particle Inspection (MPI)
Coated with QPQ corrosion resistant finish
*A barrel that is shorter than 16″ is only for use on a pistol configuration firearm or a NFA registered Short-Barreled Rifle (SBR). All NFA laws apply!