Drop-in design compatible with all factory Ruger 10/22 Takedown .22 LR receivers; Reinforced polymer construction for strength and durability; 60 degree grip angle from bore axis; Adjustable LOP from 12.5"-14.5" with 0.50" Spacers; Non-slip rubber butt-pad; Reversible barrel tray accepts all factory barrels as well as aftermarket up to 0.920" diameter (12.5" minimum length); Adjustable barrel tensioning shim in forend for setting barrel preload (barrel may also be free-floated); Compatible with all capacities of factory Ruger 10/22 magazines; M-LOK slots on forend sides and bottom for a wide variety of accessory and sling mounting options; Two dimpled drill points to install optional standard swivel studs (#10-32 x 3/8" long dome stud)