This week we're taking a look at the AR-556 MPR (Multi-Purpose Rifle) from Ruger, chambered in .450 Bushmaster. Perfect for big hogs and deer alike, the .450 Bushmaster has endeared itself to shooters since its Jeff Cooper-inspired inception, and to hunters in particular since the rise of the straight-wall only states. Centered around this beefy chambering, our test rifle boasted a detachable five-shot magazine, an 18.63-inch barrel and a free-floating handguard with M-LOK slots. For more information about this big-bore AR, check out thevideo embedded above, hosted by Digital Associate Editor, David Herman. MSRP: $1,099; ruger.com.