The conversion kit is not a firearm.
50 on up depending on EXACTLY what you have
There were 3 different models of the Stoeger .22 Luger pistol, with slightly varying values. Depending on condition, values are ABOUT $150-$250.
No. The CMMG conversion kit is a proprietary design compatible only with AR-15 rifles.
No
Stoeger made the .22 cal Luger from 1969 to 1986
Georg Luger died on 1923-12-22.
Depending on condition, between $100 and $250- presuming you mean the .22 Stoeger Luger.
22 cal......................
5 USD
100
If it is reasonably complete, $5 to 10.