Had to polish the barrel, it was way to rusted for me to take a picture of.
Fully sanded and polished, looks good right? Wait till you hear it fire.
And of course, what type of person would I be if I didn't post a video.
Its a Remington .177 caliber Airmaster 77 airgun. I modified the inside a bit to have a slightly weaker spring to allow more shots, rather than one weak one. This explains my slight absence as well...