Morning good Sir, I notice you are in Idaho so you are in one of the strong 2A states. As a result sometimes the regulations and associated advice from different States may or may not apply to you. Do some local State research and be sure you have a good understanding of your areas laws around building your own firearm. First and foremost to @WV64Signet point first step is identifying what is the primary use of the rifle? Once you establish that you can then develop your bill of materials and cost analysis for assembling your purpose built rifle. Then you can run a cost comparison between your cost to build and purchasing one already assembled. I own and operate a Firearms Training Center, I teach a broad spectrum of students from SWAT guys to first time Gun owners. I also compete in a multitude of disciplines including black rifle events. What I am trying to gracefully say is I see a lot of equipment and folks running it. With todays lead times and cost of components I have seen a migration away from building your own AR to purchasing it assembled then making the modifications specific to the end users need. The guys we are seeing building their own lately are doing so simply because they want to build their own from a sense of pride and ownership, the decision is not cost driven as most guys spend more building than buying one. Selecting options will make you dizzy! Take your time and do some research. There is a good thread here in FABO called guns dogs and blades. There is a whole bunch of AR builders in that thread. While I do in fact have both the equipment and skill set to build my own I chose to purchase a Daniel Defense for my competition needs. A decision I have never regretted. I apologize for being long winded but you did ask! A question like that is like asking this bunch which cam to put in! Hah! Please do not hesitate to send me a PM and I will answer any questions you might have anytime.
