Is BadA$$ery a word? Well, it should be because this AR10 exhibits a lot of bad a$$ features. Here we have a Ruger SR762, chambed in 7.62x51 NATO (.308) that I recently acquired. It goes well with the Ruger SR556 I purchased last year. The SR556 was Ruger's first AR pattern rifle featuring a piston-driven gas operating system. The piston system prevents gas, and associated fouling, from entering the action as in direct-impingement guns. Instead, the gas interfaces with a piston that in turn drives a transfer rod to cycle the bolt. This results in a cooler running bolt carrier group, less fouling and increased reliability when cleaning your rifle is not possible given your particular circumstances, such as a never ending horde of zombies approaching. I'd rather not be reduced to beating them over the heads with a club in the form of a rifle if I can help it. But, enough words, let's get to the pictures, shall we? More to come after I get the optic mounted, the muzzle brake and handguards installed and we have a decent weather day here so I can get out to the range and give it a go.