The FAB Defense R10/22 M4 Collapsible Stock Conversion Kit presents a high quality and ability enhancing tactical upgrade for the Ruger 10/22. This unique stock offers the perfect combination of a classic bench-rest design with a modern tactical versatility and buttstock features. Features1913 MIL-STD Picatinny side and lower railsAllow secure mounting of any picatinny based accessoriesQuick and easy drop-in installationCollapsible buttstock system with 5 length optionsSide folding buttstock (left folding by default) for compact carry and storageQuick-Detach sling swivel sockets on both sidesErgonomic design prevents wrist fatigue and ensures secure gripFinger grooves and backstrap shape improves trigger operationDurable and lightweight fiberglass reinforced polymer construction