2xSnap In Scope Adapter Mount Base 11mm Dovetail to 20mm Picatinny Rail
UniqueFire Snap in Rail Adapters Converts 11mm Dovetail to 20mm Picatinny Converter Mount (D0017(2PCS)). - Top Slot w/Spring Tension Retraction/Expansion Design to Snap into Picatinny Base. Rail Type: 20mm Picatinny.