PSR reviews the Wolfpack Armory WP47, a hybrid firearm that combines the ergonomics of an AR-15 with the punch of the 7.62x39mm cartridge. This mutant design uses an AR upper receiver but is built to accept standard AK-47 rock-and-lock magazines. He notes that while it lacks a last-round bolt hold open feature, it offers a lighter and more modular alternative for those who enjoy AK ballistics but prefer the familiar feel of an AR platform.