
Pictured above is a recent build using an upper purchased from Palmetto State Armory, who frequently offers insane deals on high quality upper receivers. Their private labelled house brand uppers include button rifled and cold hammer forged barrels, milspec uppers, and optional mil spec M16 bolt groups. The prices are extremely aggressive and their daily deals are always difficult to resist. After I disassembled the upper, I sent off the barrel to ar15barrels.com, who cut the barrel down to 14.7-inches and pinned/welded an A2 flash hider to make the minimum 16-inch non-NFA length. Note that I sent the barrel with the barrel nut I intended to use, as once the muzzle device is pinned and welded on, the gas block and barrel nut cannot be installed after the fact. Randall at ar15barrels.com turned the barrel around in days and within about a week I had my barrel back. He offers barrel contouring, cutting, gas port adjusting, and other machining services at very reasonable prices.
The bolt used in the above build was coated with NP3 by Robar Guns. As seen in my previous post, NP3 offers abrasion resistance, built in lubricity, and excellent corrosion resistance that is far and above the standard phosphate finish. To top it off, I finished the build with the excellent CMR rail from Centurion Arms, which offers light weight, and an extremely ergonomic and narrow diameter rail. I have several builds with this rail and I have to say it’s my favorite rail system so far. Other accessories include TangoDown’s vertical fore grip and BattleGrip, SureFire X300, Aimpoint PRO in a LaRue mount, Troy Industries flip up sights, and Viking Tactics sling.