"When I do something that requires manipulation several small parts and springs at once, I put the whole mess inside a big ziplock bag.
Unless you're really unlucky and the springs shoot out of the bag opening past your wrists it can prevent an hour of parts hunting.
If you ever try removing the mag catch from your Sig you should definitely try the bag deal. The small plunger that locks the catch into the frame can go supersonic when it flies out."
A great idea if, like me, you sometimes have a part go SPROING in you basement workshop with all the wood shaving an all the flotsam and jetsam a shop invariably has.