Smith & Wesson M&P Customizable Lower Parts Kit

The M&P® Customizable Lower Parts Kit is the perfect choice if you want to build a custom AR-15. This kit provides all the minor, MILSPEC parts generally used in an AR-15 build, but allows the flexibility to add popular common after market upgrades.
Lower Parts Kit includes:
Bolt Catch, Bolt Catch Plunger, Bolt Catch Roll Pin, Bolt Catch Spring, Buffer, Retainer, Buffer Retainer Spring, Disconnect, Disconnect Spring, Hammer Pin, Hammer Spring, Magazine Catch, Magazine Catch Button, Magazine Catch Spring, Pivot Pin, Pivot Pin Detent, Pivot Pin Detent Spring, Selector Detent, Selector Detent Spring, Takedown Pin, Takedown Pin Detent, Takedown Pin, Detent Spring, Trigger Pin.