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Early USP 40's versus new versions

836 Views 3 Replies 4 Participants Last post by  williamthewolf
What's the difference between the original 40's and the newest versions?
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Some things that were updated over the years were the firing pin, captive recoil spring assembly, hammer, and catch. I think the firing pin and recoil spring assembly were updated early on in the mid 90's while the hammer and catch were around 2004. The newer USP's have the markings in the slide laser etched instead of engraved too.
 
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