Building an AR? Need your lower parts? Looking for a deal? Brownells has your answer! Brownells has paired together an AR-15 lower parts kit with the option of a curved black CMMG trigger or curved Schmid Tool & Engineering nickel boron trigger, depending on your preference! This 5.56 NATO AR-15 lower receiver parts kit is made of all high quality, Made in the USA, Mil-spec parts. This kit does not contain a pistol grip. Each part is well made, durable and packaged in color coded bags for easy installation. This kit is an excellent choice for building or rebuilding an AR-15 rifle. Contains: Takedown Pin, Receiver Pivot Pin, Takedown Pin Detent (2), Takedown Pin Detent Spring (2), Mfg: Brownells