The PWS upper and lower receivers are now forged, allowing for a stronger and lighter product.
A common known fact that has been lost through the marketing efforts of many AR 15 manufacturers is that a forging can produce a piece that is much stronger than a billet part.
As the metal is shaped during the forging process, its
internal grain aligns to follow the general shape of the part.
As a result, the grain is continuous throughout the part,
giving rise to a part that is stronger, yet lighter, than a billet