Vintage Sheridan Blue Streak 5mm /. 20cal Pellet Rifle With Inter-mount

  
Vintage Sheridan Blue Streak 5mm /. 20cal Pellet Rifle With original Inter-mount scope mount. 8691K is stamped on it. In good condition, I just pumped it four times and it shot well.

Has a little hissing noise when pumping, but it shot strong. Not sure if this is how it's supposed to be or not.