REX (Rapid Expansion) is engineered for fast, controlled expansion and reliable terminal performance. Unlike the rest of the Peregrine bullet lineup, which uses gilding metal, REX is manufactured from solid copper. Designed for everything from small to big game, it delivers superior accuracy, exceptional energy transfer, and devastating wound channels — all while retaining its weight for consistent penetration. As the most affordable premium bullet on the market, REX ensures fast, humane takedowns at a price that makes top-tier performance more accessible than ever.