I have a TLR-3 that I easily change from one pistol to another. It is currently on my HD pistol I keep in a SpeedVault discretely mounted in my bedroom. I was a little concerned with its the polymer construction, but haven't had any issues. It's bright, reliable and easy to operate. It's also relatively compact and doesn't overwhelm the pistol when it's mounted on my M&P9C. I don't have any experience with other compact weapon mounted lights, but I don't feel a need to try others either.

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M&PC FS BG Shield+ 642 686+