Rock River is good. Most all are decent; it’s the toys that muck things up, usually, and a user that doesn’t understand the limitations of the weapon or the toys.
I’ve had a good many AR’s over the years, and I keep hanging on to the Bushmasters. Solid, well priced, and damned reliable, in my experience.
I stay away from steel case ammo, and I buy and sell magazines to keep my stock within a year of new. Other than that, clean it and use it.
Why do you swap out your magazines every year? I have magazines that are more than 30 years old and they work better than many I have purchased since.
Just curious as to your thoughts on the matter. TX