Mt. Rainier (Arms?)

[SilverK20A3]

Or what a thousand rounds of .22 will grow inside a Rainier Arms XTC.

PS-Can anyone guess what might happen when .223 passes through this mountain?

East face of Mt. Rainier



West face:

[Walking Fire]

What kind of build up is that?

[SilverK20A3]

I'm gonna guess a combination of Blazer .22 wax, whatever that gold stuff is on Remington Golden Bullets, and powder residue?

To clarify, I've shot nothing but .22 through my AR for the past few months. Gonna be sad the day a .223 round (presumably) levels it. I was kind of hoping that buildup would seal the compensator completely haha