Bloodline 14.5" M4 5.56 NATO (Mid-Length)
Bloodline 14.5" M4 5.56 NATO (Mid-Length), 14.5" M4 5.56 NATO Bloodline Barrel (Mid-Length): This 14.5" M4 5.56 NATO Mid-Length barrel was designed around the USASOC specs for an Improved Upper Receiver Group with a little bit of the Rosco touch as well. The longer gas system allows for a smoother gas curve which leads to managed dwell times. This combo creates a great balance of speed and performance. ALL NFA RULES APPLY! Our Rosco 5.56 (NATO) barrels are designed to meet the modern day carbine shooters requirements. We are a long way from our daddy's "Sporter" AR, and those specs just won't cut it anymore. From properly managed dwell times for SBR's, to running Suppressed, or setting up a balanced patrol carbine we have incorporated your needs into our engineering. We have successfully accomplished this by picking the right twist rates, gas port diameters, and barrel materials according to the barrel we are making (not a lazy blanket method). We have also balanced input from our consumers and military end users in order to bring you the product you need, not just the one we want to sell you. Barrel Length 14.5" Barrel Weight 26.34oz Barrel Material 4150 CMV Barrel Caliber 5.56 Barrel Profile M4 Twist 1/7 Barrel Thread 1/2 x 28 Gas Block Size .750 Gas System Length Mid-Length Barrel Crown 11 Degree Barrel Finish Nitride Barrel Extension Finish Nitride Browse all of our 5.56 NATO Bloodline Barrels >>