M4 R10/22 Features The 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. M4 R10/22 Specifications 1913 MIL-STD Picatinny side and lower rails Allow secure mounting of any picatinny based accessories Quick and easy drop-in installation Collapsible buttstock system with 5 length options Side folding buttstock (left folding by default) for compact carry and storage Quick-Detach sling swivel sockets on both sides Ergonomic design prevents wrist fatigue and ensures secure grip Finger grooves and backstrap shape improves trigger operation Durable and lightweight fiberglass reinforced polymer construction Available in black olive drab green or desert tan Incorporates a 25 years limited lifetime warranty Weight: 1063 gr Width: 100 mm Height: 147 mm Length: 490 mm Width (open / deployed): 64 mm Length (open / deployed): 780 mm LOP min: 333 mm LOP max: 405 mm