I picked this up for a gas gun build but spent some money on a 223 trainer. No extra gas gun for me. It’s 34 mm rings and here is the link for it, msrp was something dumb like 530 I would like 175 for it shipped
www.leupold.com
Integral Mounting System (IMS®) | Leupold
A Leupold® Integral Mounting System (IMS®) has a durable monolithic, cantilever design that is formed from a single piece of bar stock, affixes securely to a picatinny rail, and built to withstand the most intense conditions.
www.leupold.com
