Picked this bad boy up last week with some junk steel ammo (dumb purchase) and took it to MFS Indoor range with my brother-in-law last night to give it a solid break in. 150 rounds, no problems. Only issue I saw was afterwards. The end of the barrel looks like it's covered with deposits. Is this typical with this gun? I'm going to clean it tonight to get a better look at it. Below is a RANDOM YouTube Video of some guy with the same issue.
https://www.youtube.com/watch?v=oUam3Gl9WR0
https://www.youtube.com/watch?v=oUam3Gl9WR0