Drozd Baikal Blackbir MP-661K. 177/4.5mm Long Barrel PARTS OR REPAIR (READ)

  
My loss your gain for the mechanically inclined. Look at the pictures closely to understand what you are purchasing. After purchasing I discovered the first issue was there are 3 batteries corroded in the battery compartment. Not wanting to damage the unit I did not put any effort into removing the 3 remaining batteries. I wanted to access the mother board and check the other components for corrosion figuring worse case scenario I could wire in a different battery pack, here is where stupid came in.

I unscrewed the barrel, then the breach lug nut whatever you want to call it came loose and is misaligned so I couldn't screw the barrel back in. Looking at the template for this I figured it would be an easy fix for the mechanically inclined. Not wanting to create anymore problems I left it as is for the next owner. It appears to have been well cared for. This unit takes the larger C02 cartridges not the extra small ones.

I will gladly answer any questions to the best of my ability or take any additional pictures.