Yup. Change it at your own risk. If I'm pinned down and absolutely must change my battery right then, I'll pull out my pistol as insurance. That being said, battery swaps are meant to be quick, so if there's screws involved or something else complex then you may consider changing your battery system. If I'm assuming correct and you would use WWII weapons instead of modern tactical weapons, then you probably don't want to add modern stocks or mod your gun much, etc. So maybe change it to a push pin release instead of something more time consuming. Another option, and frankly a totally reasonable one, you'll get shot a ton in game, so you could just call yourself out, go back to respawn and chafe your battery there.
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