The best buy for your money, is to grab snarks upper. Its almost worth it for the billet upper, BCG and AGB alone. If you don't like the barrel or HG you can switch it out later and sell them. It will get you shooting the soonest (after you get a gas tube).
If you want to build things now, in these times, you need to start looking at uppers as items you can part out, because of various parts shortages.
If you want to build things now, in these times, you need to start looking at uppers as items you can part out, because of various parts shortages.