This BCA AR-15 16" M4 contour black nitride barrel has a mid-length gas system with a 1:7 twist rate. It is chambered in 5.56 NATO.
All Finished Barrels go through a 100% Inspection Process. Inspections Equipment includes CMMs and Air Gauges for the Bores.
|WARNING: This product can expose you to chemicals, such as lead and other petroleum products, which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.|
It is the responsibility of the consumer to ensure all state, local, federal, and ITAR regulations are followed
Does not include gas block or gas tube
|Material||4150 Chrome Moly Vanadium|
|Thread Pitch||1/2 x 28|
|Gas System||Mid Length|
|Gas Block System||0.750|
|Gas Hole Diameter||0.072|