I'm thinking of building a AR this time around, at least partially. I enjoyed changing out the original pieces on my Bushmaster for new Magpul furniture, and I felt that I was actually learning how it works better. So I figure if I build the next one I'll know it much better inside and out. I may end up buying a complete upper, but my question in the build is this.
If I build my own lower, am I looking for anything other than mil-spec on a stripped lower to make sure it fits with any upper? If it matters, I would like to put in a ambi-safety selector, as I am left handed.
If I build my own lower, am I looking for anything other than mil-spec on a stripped lower to make sure it fits with any upper? If it matters, I would like to put in a ambi-safety selector, as I am left handed.