Guntec AR-15 Lower Parts Kit Ambi Features The Guntec USA AR-15 Lower Parts Kit Ambi bundles together the magazine catch magazine catch spring magazine release button bolt catch bolt catch pin bolt catch spring and bolt catch plunger needed to complete a standard AR-15 lower receiver. It also includes the pivot pin takedown pin takedown pin detents and springs and trigger pins that hold the fire control components and receiver halves together. Rounding out the kit is a multi position short throw ambidextrous safety letting builders add left and right side control without buying a separate selector. Having every small part in one kit saves time sourcing individual pieces from multiple sources. Because the kit ships without a pistol grip or trigger group builders can pair it with whatever grip and trigger they prefer for their specific use case. All parts are manufactured in the USA and finished in black to match most standard AR builds. The varied materials used across the kit are chosen to match the function of each part from steel detents and springs to the aluminum ambi safety lever. For anyone assembling a lower receiver from scratch or replacing worn small parts this complete kit is available for sale at GrabAGun. Guntec AR-15 Lower Parts Kit Ambi Specifications Manufacturer: GunTec Model: AR-15 Lower Parts Kit Ambi Material: Varies Color: Black Includes: Magazine Catch Bolt Catch Takedown Pins Detents Springs Ambi Safety Made In: USA Available At: GrabAGun