You are looking at a Black Rain Ordnance Fallout BLT Custom series rifle. Similar to the standard BLT series this rifle has the 7075 T-6 Billet lower with the forged upper. In addition to that this custom rifle has an added Nickle BCG, Nickle Barrel, Nickle Comp, Norguard Charging handle, DTOM laser-etched mag, and 500 rounds of Winchester M193!!!
https://www.arrowbeeprecision.com/product-page/fallout15-fu-556-gadsden
https://www.arrowbeeprecision.com/product-page/fallout15-fu-556-gadsden