HK USP Recoil guide rod question?

B

Bongos

New member
My friend and I just back shooting my USP 9mm and when cleaning it. My USP 9 has a captured Recoil spring in on the rod, while my friends USP 9mm 's recoil spring is not captured. Did HK switch to a captured recoil guide rod (Mine was made after my friends) or is there something wrong? Any info is much appreciative?
 
Early models did not have a captured recoil rod, instead, they used the interior of the front of the slide to contain the recoil spring. Also, early models did not come with polygonal rifling - take a look at your friends barrel closely and see if there is the more conventional land and groove rifling. HTH,
 
Longduck,

Thank you, we checked and you are absolutely correct, there is rifled barrel not polygonal like mine. This is a great forum, fast and accurate responses. Again thank you!
 
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