Black Rain AR15

This is a Black Rain Spec15 that I purchased new at a gun show in 2018. 
Since owning it, I broke in the barrel per Black Rain ordnance’s instructions, but that’s it, it has less than 100 rounds of .223 through it. I’ve looked it over and there are no blemishes that I can see, it’s stayed in my gun cabinet for years or in the range bag it came in. 

The only thing I’ve done is mount a CVLIFE red/green dot to it while I was firing the rifle during its break in period