Finishes-uncoated areas: HC vs. teflon?

greg c

New member
Is it true that not all components of a semi-auto are coated during hard chroming vs all components being coated with the teflon finishes? If so, which parts are "neglected" by the hard chromers?

This question arose from a little blurb on a well known gunsmith's website regarding the differences b/t HC and teflon finishes.
 
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