Hello, I am new to this site and do not own any H&K products. I have been reading about the USP 40 Compact along with the Walther PPQ and the S&W M&P Shield. Out of these three I will pick one after I get a better feel for them. Meanwhile I have a question about the H&K, the (Specially designed captive recoil spring assembly with polymer absorber bushing). This bushing is it something that will wear out after a while and need to be replaced. I have a couple other pistols with some of these plastic parts that need replacing and am not wanting anything like that in any new pistols. Thanks for any information on this subject.