If you want to do some searching, the best deal on an "Annie 54" is the Scorpio EM322A... Older manf with the 20", 6 groove barrels
These ARE Annie 54 clones with some Chinese simplifications. Got them as a joke, was blown away by how well that batch shot. We eventually got 8 rifles all of which shot great. I competed with mine out to 400yds and it took me to the podium vs some very gucchi gear.
I would lean on the threaded version so that I can add a tuner. SK rifle match as a base... better Lapua Center X or Midas+. Lots matter and it is so rare to get a lot without some percentage of flyers. More money, good lot = less flyers.
1" or better at 100yds 5X5rds... and accept the small percentage that are flyers. Competition lots would be no more then 3rds in that 25rds test outside 1" but still inside 1.5".. Practise lot may still have 3 to 4 flyers but those zingers push 2" or more.
Did not find the micro groove barrels to shoot all that well. The EM332X with the shorty barrels were meh.
If you don't need a sub 2lbs trigger, the Scorpio can be a great find. If you want light pulls, get a true annie as the scorpio uses a stand alone trigger group.
The actions polish up extremely smooth. Metal mags actually run well too. Some modifications needed for a scope base or you can just grooved receiver rings
Jerry