My second AR was an Armalite AR-10T I got years ago. Sold it and went about life, but got back into shooting and the bug bit much harder. All of my AR's are built by myself, head spaced, staked, etc. It was also an excuse to go down the tool rabbit hole once again to get all the stuff associated with assembly and maintenance. My current rifle is an Aero M5 308 with a 18" Rainier Arms Ultramatch barrel and SIG 3.5-10x optic. In Ohio, you can only use slant walled rifle cartidges to hunt hogs or coyotes, and since feral hogs aren't really a thing up here (yet), that just leaves 'yotes for hunting purposes. I have some private land, so I can shoot anytime I want, so I mostly hit targets or plink around the woods, less with this big rifle, but she certainly makes her appearances when it's time to roar.
Long term, I'm waiting for Radian to come out with their LR308 set, and an SR-25 is definitely on my list of must haves, along with just about any other KAC stuff I happen across. It's getting harder, not easier to find, and chances are better with resellers like Thoroughbred Armament (Not a plug, no association with the company, they're just good folks). There are people who think .308 is a dinosaur round, but I like it for it's availability, plus, I like to keep mouths to feed to a low number. I presently only have .22, 9mm, .223/5.56. .300 BLK and .308 in my arsenal; ie those most likely to be in stock anywhere, as long as there isn't a huge panic buy going on!