#html-body [data-pb-style=M29UP8L]{justify-content:flex-start;display:flex;flex-direction:column;background-position:left top;background-size:cover;background-repeat:no-repeat;background-attachment:scroll;border-style:none;border-width:1px;border-radius:0;margin:0 0 10px;padding:10px}#html-body [data-pb-style=G9AQC76]{border-style:none;border-width:1px;border-radius:0;margin:0;padding:0}This BCG functions with all PSA .224 Valkyrie Uppers. 9310 steel bolt assembly, nitride treated for durability. 8620 carrier, nitride treated, with a nitride treated gas key properly staked with grade 8 fasteners.