Sunday Touch Around 6: Worlds cheapest .50 cal

Today I have a 12.7 x 42 or otherwise know as 50 beowolf from Bear Creek Arsenal and a blem stripped receiver from Palmetto State Armory, will a Magpul lower kit. The red dot is a Sig Sauer Romeo 5X/XDR. This whole deal is around $400. SPH likes big bore but is cheap!