The Riton by Contessa 34mm Picatinny QD Mount is precision machined from hardened steel and features a tactical Quick Detach (QD).
Quick Detachable Mount for Acro sights. Raises height of optical axis to 30 mm. Fits on Weaver and Picatinny rail.
Quick-Detach Mounts for Mounting ACOG Optics to Picatinny Systems
The Midwest Industries Quick Disconnect Bipod Adapter was designed to work with Harris type bipods, and provides a single sling swivel stud for that purpose.
Quick Detachable Mount for Acro sights. Raises height of optical axis to 39 mm. Fits on Weaver and Picatinny rail.