Located in Tucson, Arizona, and Dripping Springs, Texas, Quarter Circle 10 is a specialty weapons manufacturer and industry resource for pistol caliber carbine products. All Quarter Circle 10 products are made, not modified, to accommodate the AR15 platform, creating an aesthetically superior look and top-rate performance standard. At Quarter Circle 10, we are dedicated to providing shooters with high-quality performance and unmatched customer service. (less)