About $130
No published sn data
Best to let a gunsmith show you how.
Find a gunshop and ask for help
25-80 USD depending on specifics
For some no problems, for others lots of problems.
try: gunparts.com gunsnparts.com gun-parts.com
One drop on each slide rail.
$25-$65, depending on condition. These are not high dollar guns.
No published sn data.
No published sn data.
Each one has its own quirks. Some run, some don't.