Howdy,
The hand spring and trigger/bolt spring are prone to breaking on both Colts and Remmies.
You can order extras from Midway USA, Dixie Gunworks or VTI Gun Parts.
Get some screwdriver bits from Brownell's that properly fit the gun's screws.
Keep it all handy when you're out shootin'. Best to just have some spare parts on hand.
These old timey six-shooters like to lose screws and break leaf springs.
Part of the Charm I supose...
Happy Trails
Cincinnati Slim