You will really need to determine the purpose of the rifle before you build it.
It's similar to saying "I need a new vehicle, help me out." without describing what type of driving you do, people that will be riding in it, towing needs, etc.
I ultimately went with a mid-length system Rock River as it seemed like a pretty good compromise between different things I was looking for. That rifle however would not be a good 300 yard varmint rifle though.
+1 on AR15.com. There is a thread that runs through many of the options that will either confuse you or leave you with a great idea of what you want. Once you know what you want then you can determine the best way to get the various parts. Be aware that with the election most vendors now have a significant back log of orders.
Here you go.. i have shot a lot of ar-15's .. if you want a gun to shoot.. not to sit in the safe.. not to treat like a baby but a gun you can take out to the ranch.. shoot it.. maybe even drop it on accident that will not break the bank and you are not scared to take it out of your home and fire because you don't want the value of the gun to go down like a colt 6920 .. go this route
Find a stag arms lower.. which up until 2 weeks ago you could get for $99.99 now they are running $150 .. Find a local dealer that will sell you one or order one and get it shipped to a cheap FFL for $20.00 Once you find that.. you order this straight to your door step.
find a friend or a gun shop owner or someone that knows to put it together for you. or just read google or ar15.com for instructions and there you go..
brand new ar-15 m4 with sights, pistol grip, and adjustable stock with a 30 round magazine. for under $800.00
I recommend this kit because stag is a good company, has tighter tolerances than bushmaster/colt due to its lack of govt involvement. The gun will work well for most applications and is affordable.
please email, im , w/e for any more help. I feel that I have a good idea of how to put together an economical ar-15 shooter A lot of my friends argue with me but the truth is if you are going to use your firearm more than twice a year and you are not military or police officers and really depend on your firearm to protect your own life and the life of others around you don't spend $1200.00 on it, and then put $350 rails on it, and $500 red dot sights on it etc etc.. because that equipment will get scratched, damaged, USED in the field.
AusTex makes a very good argument. Be aware though that the current backlog on those kits is 7 or 8 weeks. Also stag lowers are hard to find right now. If you do find them get what you need and let me know where. I need one for the kit I have coming.
Not a problem. Again many will argue with me and I am not recommending putting airsoft ar-15 parts on your rifle however there are top of the line companies and there are lower end companies that still make a good product just not as well known for example:
Eotech - $400-$700++ for a red dot scope ... what i would do..
Pick up a bushnell Holo Sight for half the price
Larue, daniel defense, KAC RAS ( handguard rails for lights etc ) $250-400.00
What I do, pickup a YHM quad rail brand new for $125.00 .. Fits tight works well ... and when i scratch it out at the ranch I am not crying...
So just do your research find what you like and buy for your application
I'm kind of late into the thread here, but let me add a few comments. If you like hands on projects and enjoy DIYS things, you will find building an AR a fun and rewarding project. It's something you can share with friends, and kids if you've got any old enought (10 or older I'd say)
Unless you have some compelling reason to have an operational gun ASAP, take your time. Read up on things, (AR15.COM as already suggested) and pick your components at the level you feel comfortable at assembling... by that I mean, you might want to buy an assembled upper, rather than invest in the fixtures etc you need to completely assemble the receiver, barrel, gas block and hand guards.