Griffin Precision Mounts (GPM) are machined in-house in Watertown, WI from lightweight aircraft-grade 6061-T6 aluminum. GPM mounts incorporate a dowel pin alignment system allowing use of the Accessory Interface Suite (AIS) of products, affording ambidextrous modular accessory support. The unique patented design splits the rings on two parallel but offset planes allowing accessories to be mounted on five AIS mounting surfaces: top, left, right, and 45° left & right offsets affording unsurpassed, ambidextrous flexibility.