The AR-STONER Customizable Lower Parts Kit for the AR-15 platform is the perfect choice if you are looking to build your next custom AR-15. This kit provides most of the mil-spec parts generally used in an AR-15 build, while still allowing the flexibility to add common aftermarket upgrades, such as a pistol grip and match grade trigger components. Customizable lower parts kits offer an economical way to get all the small pieces needed for an AR-15 lower, without wasting money on the parts you won't use!Kit Includes: Bolt CatchBolt Catch PlungerBolt Catch Roll PinBolt Catch SpringBuffer RetainerBuffer Retainer SpringHammer PinMagazine CatchMagazine Catch ButtonMagazine Catch SpringPivot PinPivot Pin DetentPivot Pin Detent SpringSelectorSelector DetentSelector Detent SpringTakedown PinTakedown Pin DetentTakedown Pin Detent SpringTrigger PinDoes NOT Include:Pistol GripPistol Grip Screw and WasherTrigger or HammerTrigger and Hammer SpringsDisconnectDisconnect SpringTrigger Guard or Roll...