Great Lakes Firearms and Ammo takes a great deal of pride in the precision craftsmanship they employ to produce firearms, ammunition, and components for shooting enthusiasts and the American sportsman. GLFA has established a fantastic reputation for manufacturing to the highest standards with only premium quality materials. Whether you're looking for hard to find ammunition or superb quality parts Great Lakes has what you need!
The GLFA 16" M4 Barrel is a great option for any AR build! This barrel is precision machined from a 4150 Mil-Spec steel blank with a 1:7 twist. It is double stress relieved before rifling and thermally stress relieved after to ensure the best possible accuracy and performance. Drilled for a carbine length gas system, it uses a 0.750" diameter gas block and it's threaded to 1/2x28 TPI. Chambered in 5.56 NATO this barrel also accepts .223 Remington. Precision machining and production ensure the correct component interface. Superior Great Lakes standards ensure the highest quality and longest life from your new barrel.
Specifications and Features:
Great Lakes Firearms and Ammo 5561617BLK
AR-15 16" Barrel
5.56 NATO accepts .223 Remington
M4 Feed Ramps
Button Rifled with a 1:7 Twist
Threaded 1/2x28 TPI
Carbine Length Gas System
0.750" Diameter Gas Block Journal
4150 CrMOv Steel
QPQ Black Nitride Finish