FAB Defense M4 Collapsible Stock Optics-Ready Pro Kit For Ruger Black. These Rifle Stocks from the pioneers at FAB Defense feature quick and easy drop-in installation with no gunsmith required. With finger grooves and backstrap shape the FAB Defense Ruger 10/22 Optics-Ready Pro Kit improves trigger operation. Get the best of both worlds with a classically designed yet delightfully modern FAB Defense R10/22 M4 Precision Stock PRO Conversion Kit. Specifications for FAB Defense M4 Collapsible Stock Optics-Ready Pro Kit For Ruger 10/22: Manufacturer: FAB Defense Gun Make: Ruger Gun Model: Ruger 10/22 Length: 490 mm 19.29 in Gun Type: Rifle Condition: New Weight: 1203 g 2.65 lb Height: 5.79 in 147 mm Width: 64 mm 2.5 in Features of FAB Defense M4 Collapsible Stock Optics-Ready Pro Kit For Ruger 10/22: 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 Compatibility: Standard barreled Ruger 10/22 rifles All 1913 MIL-STD picatinny based optics and accessories Package Contents: FAB Defense M4 Collapsible Stock Optics-Ready Pro Kit For Ruger 10/22 What firearm models does the manufacturer say FAB Defense M4 Collapsible Stock Optics-Ready Pro Kit For Ruger 10/22 is compatible with? The manufacturer suggests that FAB Defense M4 Collapsible Stock Optics-Ready Pro Kit For Ruger 10/22 is compatible with Ruger 10/22FAB Defense fx-m4pr1022b: M4 Collapsible Stock Optics-Ready Pro Kit For Ruger 10/22 Black FX-M4PR1022B