I used to krylon my ARs. The paint scratches off long before it cooks off. Actually the barrel is about the only part you CAN’T get the paint off without bead blasting. It more or less cooks on.
I will be buying the first 48 I can get my hands on. Ed's told me they can't sell them until the 17th. A single stack Glock 19? Yes please! Only been asking for it for 10 years!
Some light reading for you.
https://www.ar15.com/forums/AR-15/High-round-count-AR-M4-s-over-100-000-rounds-and-how-they-have-handled-on-our-range/118-677135/
It amazes me how much detail they put in this thing. Everything works from the selector to the bolt catch. The bolt even stays to the rear after the last shot.
The charging handle is functional as are the take down pins.
Don't buy daisy BBs. They suck and break the speed loader. Get the hornady Black Diamond. They are perfect in the speed loader.
They sell them at academy and walmart.