In recent years, the .450 Bushmaster cartridge has grown in popularity as many Midwestern states allowed it as a straight-walled cartridge for hunting medium-sized game like whitetail deer or hogs. To capitalize on the round's growing presence in the market, RugerA(R) introduced its all-new AR-556A(R) MPR in the caliber. As an extension of the company's MPR family, the RugerA(R) AR-556A(R) MPR in .450 Bushmaster features the company's own muzzle-brake design to help take the edge off the big-bore round's recoil. The gun is also equipped with an Elite 452 trigger for enhanced accuracy, and the rifle is completed with a free-float handguard compatible with all M-LOK Mfg: Ruger