Re: AR tuorial for non AR guys
You'll get a lot of similar lists with some variability. Here's mine, also in no particular order. This list leans more to high-round count chrome-lined carbines versus more precision oriented rifles. Any of these should run well right out of the box with any .223/5.56 ammo you can find and include top quality parts across the board.
My top choices for complete carbines
-BCM
-Daniel Defense
-Colt
-LMT
-Noveske
-Knight's Armament
Other very good options
-Rainier Arms (RUC uses DD barrels)
-Sionics (smaller, newer company)
-Rifle Gear (Also uses DD barrels)
-LaRue Tactical (SS barrels)
-Some S&W carbines
A build can be very high quality, just make sure it is by someone who knows what they're doing and why they are choosing particular parts.
In the current environment, getting a lower in any shape or form is the first challenge (stripped, assembled, or part of a complete rifle) and no one can say if/when it is going to be easier. If you absolutely want something, you can't be picky now. I think there will be better prices and availability in the next 6 months, but don't quote me on that.