No
You need a gunsmith
yes
The name of the company that made Lorcin handguns was "Lorcin." However, I believe the company is out of business, and for good reason.
Ask a gunsmith for help
$50 - $80
If it is reliable and you have nothing else, yes.
Take it to a gunsmith
better to let a gunsmith do it for you
25-65 USD
Go to a gunsmith
Try e-gunparts.com