I'm not convinced anybody "needs" to do anything to get these guns to run right. My BG380 (even with the dreaded original laser) and M&P15-22 ran fine out of the box and continue to do so. Others I know who have the same firearms have had similar results. In fact, the shop I work in with has sold hundreds of bodyguards and dozens of 15-22's. None have come back for repair that I have seen. If the gun doesn't run, send it to S&W. That's what the warranty is for.

That said, I get that some folks just want to upgrade components to " make it better". That's on them and an entirely different story.

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Dave