When you put a high-quality optic on your AR-15, like a Brownells MPO, you want to take full benefit of its performance capabilities by putting it on a rock-stable foundation.... like the Reptilia AUS Scope Mount. Brownells Gun Tech™ Caleb Savant tells us the AUS was designed for - and with input from - a "direct action group" that's known for being pretty tough on their firearms. So Reptilia designed the AUS to take a beating without going out of zero. Each AUS is fully machined from a single billet of 7075 T6 aluminum (the extra-strong stuff), and you've got 4 steel Torx®-head screws holding down each ring cap. The clamping bars and through-bolts that lock the AUS to the rifle's M1913 Picatinny receiver rail are hardened steel. The bolts can be tightened using one of three (3) wrench / driver types: a hex wrench, slotted screwdriver, or a Torx® driver. As long as you have one of these tools, installing your AUS is a done deal. More good news: all this robustness DOES NOT come with a weight penalty. The Reptilia AUS scope mount is extremely lightweight. How good is it? Now that Caleb has one on his rifle, he isn't giving it up!
