Hammer/Lifter Extractor.....
 

......serialized to the gun? The extractor on my Lifter, 10250, is not serialized to the rest of the gun. Is this normal? The reason I am asking is, I had to carefully file quite a few thousandths off it so the barrels would close without binding. I made sure that the recess in the barrels and the extractor itself were scrupulously clean before filing. I am thinking that this may be a replacement extractor that was not fitted properly. Any ideas from you all? Cheers!

Extractor
 

Internal parts and hammers often have serial (last 3 digits) stamps differing from those on the frame. I have had a couple of extractors with differing numbers. The fact that your extractor required some filing may indicate a swapped part, but it's a toss up.

Best, Austin