Luth-AR M4 Government Barrel Features The Luth-AR M4 Government Barrel replaces a worn or factory barrel with a 14.5 government profile cut in 5.56 NATO a classic contour that balances barrel weight against rigidity for a rifle that will see regular use. The manganese phosphate finish commonly called parkerizing resists corrosion and holds a thin layer of oil at the surface extending the service life of the barrel under field conditions. Threaded at the muzzle the barrel accepts standard AR-15 muzzle devices letting the builder add a brake to tame recoil or a flash hider to manage signature. This threading also opens the door to running a suppressor for builders looking for a quieter range or hunting setup. An F marked front sight base ships with the barrel giving the correct sight height for proper co-witness with a flat top upper and red dot sight. Finished in Black to match standard AR-15 furniture and components the barrel fits cleanly into most existing builds without a mismatched appearance. Built for the AR-15 platform this barrel is a practical option for builders replacing a damaged barrel or upgrading from a lower quality factory unit. The Luth-AR M4 Government Barrel is a durable ready to install upgrade for sale at GrabAGun suited to any 5.56 AR-15 build looking for proven parkerized barrel construction. Luth-AR M4 Government Barrel Specifications Manufacturer: Luth-AR Model: M4 Government Barrel Type: Barrel Caliber: 5.56 Compatible Hosts: AR-15 Barrel Length: 14.5 Finish: Manganese Phosphate Color: Black Includes: Front Sight Base Available At: GrabAGun