I have an Ares SCR with the Gen 2 trigger (before the name change to FightLight). No complaints. You do have to choose your stock to match your optics/optics height. I wanted the youth stock to shorten the overall length and that doesn't have the cheek riser. Wound up mounting my Aimpoint Micro right to the upper (no riser), and to get cowitness I put on the CZ Scorpion irons. So the upper is now not something I can share with an AR. The upper is a BCM 16" KMR-A with a comp on it (no flash hiders!)
Big fan of these for CA though. As others have noted, quickly feeding any tube-fed magazine (lever or 12ga) is not something I want to do under stress. I can barely load my Rossi .357 carbine under perfect conditions! If I have to start unloaded, I'd take a 10rd PMAG in an SCR over any tube-fed long gun for that reason.
Went out looking for targets of opportunity (jackrabbits/wild pig) with my son, and he carried the SCR while I carried the 1301 with shot and slugs.
Do keep in mind that if you think you might wind up hiking/hunting with whatever you get, sourcing certified non-lead projectiles is important in at least CA! Barnes is great for 5.56 but copper .357, 10mm, or non-lead 12ga slugs are not easily found even in decent-size gun stores around here.