I have about 500 rounds through my FS2000 with an EOTech on top - and I would never want to come up against that combination in any situation.
For fun, we throw a plastic ball or golf ball up on the hill side, then play golf while pushing the ball up the hill with the objective of never allowing it to come to rest.
The butt pad is wide and tall, so there is almost no recoil, seems every shot comes back to the POA / POI. As you spend time with the rifle you learn to count your shots so that you change out the mag before the mag runs dry - otherwise it requires a full pull on the cocking handle. As you spend time with the rifle you learn that the mag release button is your friend, simply grab the mag, rotate your hand, and drop the empty mag to the floor. Seating a fresh mag requires disciple to seat the mag past the weather proof seal - some people remove the seal.
The trigger is like a sponge and the only thing you can do with it is to place good grease/dry lube on the plastic to plastic surfaces. The rifle is shipped "in my opinion" dry, and needs a good lube job on the trigger unit.
For the money, a RRA AR-15 beats the trigger hands down at half the cost.
For the money, there is no faster target acquisition in CQB in .223.
If you want .223 as your go to rifle, you might like it. For myself, there is nothing better than my DSA SA58 FAL in 308.
Your results may vary, BSR
PS: If you reload .223 and shoot from a bench, the FS2000 will drop every case in the exact same spot - I use a thick towel to cover the bench and recover 100% of my brass. Be careful as you inspect the rifle, most people are not comfortable with handling the rifle because the chamber/bolt is enclosed and not open like most rifles.