FAXON AR15 BARREL 5.56 NATO 10.5" 1:8 PENCIL PROFILE BLKUpgrade your AR15 platform with the Faxon 10. 5" 5. 56 NATO Pencil Profile barrel. This lightweight barrel is designed for builds where every ounce counts, without compromising on performance. Machined from 4150 Carbon Moly Vanadium steel and featuring a button rifled bore, this barrel provides exceptional accuracy and durability in a compact package. The Pencil profile significantly reduces overall weight, making your rifle more maneuverable and