UTG .22/Airgun to Picatinny/Weaver Low Pro Snap-in Adaptor Innovative rail platform to Convert most .22/airgun rails Top slot with spring tension retraction/expansion design to snap into Picatinny/Weaver base Extremely low profile and lightweight .22/Airgun Dovetail to Picatinny/Weaver Rail Adaptor Innovative Rail Platform to Convert Most .22/Airgun Rails Top Slot with Spring Tension Retraction/Expansion Design to Snap into Picatinny/Weaver Base Easy Installation with Most .22/Airgun Rails, 2PCs/Set