$1,0008

I have two suggestions for you. Pyramyd Air guns sells and repairs some air guns or they might know who does. Try them first (see link below.)

second suggestion is, there are people who make a living repairing older air guns and rifles, here is a link to quite a few of them ( see the link below)

National Traders in Anarkali, Lahore was aking 50 k in April, 2011. I believe it wud be around Pakistan Rs. 55 k by now.

Hi, go to the You tube videos, then in the search box write down Makarov pistol mod-59 and you will get various examples of how to break down and assembly the .380 and the 9mm, good luck.

value depends on overall condition, however, the rosco has little value...........

Generally, no. While single shot rifles MAY have the rifle barrel replaced with a shotgun barrel, reverse is not true (usually) A rifle cartridge generates much higher pressures than a shotgun shell.

I bought a ij 58 to day for 500$ in very very good condition

There is a main dealer in UK and have loads of parts, old and new.

on a single shot barrel you must remove the barrel and look at the flat side underneath the chamber to see the choke stamping.