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Good question. UHF RFID tags could work well to identify weapons under relatively extreme temperatures. However, if you intend to continue tracking the weapons throughout their lifetime, you might expect to need more specialized tags. In the past, there have been companies that provide specialized tags built to sustain the vibration and force you mention, including Advantech. With that said, most of the firearms-management systems we have written about, including those used by military agencies, police forces and private gun owners, have employed standard UHF RFID tags, and the results appear to have been good.