It can, you just need to file a form before had letting ATF know destination. Or you can just slap the brace on it and transport it out anytime in a non sbr configuration.
Spending $200 to exercise your god given right is big lame. Unless something radical changes with the ATF keep rocking the brace. Or form 1 and keep a brace around so you can get around the hassle of taking the rifle out of state
I’d say AAC and KAC are still behind the power curve for a recreational buyer. Rugged, Q, and Dead Air (in no order) seem to be regarded toward the top in a blended performance of weight/db reduction/durability. Energetic arms is making some incredible stuff too that’s pretty great for the weight.
If the price is reasonable and appearance is your priority then fire away. Prepare to be underwhelmed in the area of Db reduction though. There have been serious advancements since the introduction of the surefires especially since the civilian marketplace is weight and sound conscious.
Hearing safe is a bs marketing term created by silencer companies. I would suggest the Vox by energetic arms. It is lighter, can use wipes, and accepts deadairs adaptor if you want to use it.