JP
Wilson
Larue
Les Baer
All great rifles. Of these, the Les Baers are my most accurate.
For budget lightweight M4, I have found it very hard to beat a S&W m&p15. $699 ish, Add a Larue trigger for $90 and you are good to go. Upgrade plastics if you want for another $100. I have done this to 3 of these rifles, and they are all 1” guns with Win 193 ammo.