That's good news. My first AR was a Bushy Predator purchased used from PM member and even though AR's are no longer allowed on the ranches I hunt, it is one of my all time favorite coyote rifles and still one of my most accurate rifles.
my first AR was also a bushmaster, but just a basic 16" ORC. and boy was it a shooter. still is. 55vmax almost stack themselves out of that barrel. dirty holes at 100 yds and nickle to quarter-ish groups at 200. i gotta be doing my part well, but the barrel with handloads is very capable
once i realized how nice it shot, i traded my 700 varmint for a VXIII cuz i didnt need that long heavy thing anymore to shoot critters well, a nice optic would be way more usable to me
just dont run that upper a lot these days because my 20" 1:7 woa is my baby lol
that original bm lower is still my primary lower (timney, silent capture spring, ctr, hogue overmold). there's a *lot* of trigger presses on that lower over the last ~12 ish years and various calibers its worn
if that rifle wasnt everything it turned out to be, i dont think i'd be anywhere near of an ar fan as i am