Well, I have finally finished my first AR. It is a Palmetto State Armory rifle that I partially built myself. I ordered an M4 upper and a stripped lower. I then assembled the lower with a PSA LPK, with help from AR15.com. I added an Ergo grip and Mag-Pul collapsible stock in FDE. I then added a Nikon M223 4-12X40 SF scope with BDC in a Primary Arms mount to the M4 upper. I then fired it to see how I liked it. After firing, I decided to make some changes. I replaced the stock handguard with a Midwest Industries T-7 free-float quad rail and front trim ring, the Primary Arms mount with a Burris PEPR Quick-Release mount, the front sight/gas block with a YHM lo-pro gas block, the stock safety with an ambi safety, the trigger/hammer springs with Wolff springs and the stock charging handle with a BCM Gunfighter large latch handle and a Mag-Pul FDE trigger guard. I sprayed a few mags with FDE paint and added Mag-Pul magazine pulls. I finished it off with Mag-Pul FDE ladder rail covers, a Mag-Pul BAD lever and a Harris bipod. I think I got it all. Comments? Did I do anything ill-advised? It shoots great, BTW...