Mil-Spec M4/AR-15 Semi-Auto LPK From Stag Arms

Complete Milspec kit

This lower parts kit is compatible with all Mil-Spec AR-15 lower receivers such as Colt, FN, Daniel Defense, LMT, and many more. It includes all the parts required to assemble a stripped Mil-Spec lower except for the buttstock assembly. This kit includes a right hand safety selector.

For additional information and support, check out these videos on how to assemble a lower receiver parts kit and a reference on part identification. 

"AR Build pt1-AR15 Lower Parts Kit Identification"

This video is a great resource for identifying all the different parts of a typical AR15/M4 lower receiver parts kits. It's important to know what you have before you start putting the pieces together. 

Detailed View: How To Assemble An AR15 Lower from Midwest Gun Works