The Streamlight TLR-10 Gun Light with Red Laser will mount to the underside picatinny rail on an FN 509 pistol via the included 1913 rail key.
The Streamlight TLR-10 Gun Light With Red Laser And Rear Switch Options mounts to picatinny rail. It could be mounted on a Springfield XDM Elite.
The Streamlight TLR-10 Gun Light With Red Laser And Rear Switch will mount to a Sig P320 XCarry but will be large for that handgun.
The Streamlight TLR-10 Gun Light will fit a CZ P07, however, this light is designed for full size handguns and may be a little large for a P07. I would recommend the Streamlight TLR-2 HL High Lumen Weapon Flashlight for a better fit. You can find it by using the link below:
https://www.opticsplanet.com/streamlight-tlr-2-hl-high-lumen-weapon-mounted-flashlight.html
The Streamlight TLR-10 Gun Light will fit a Canik TP9 Elite SC, but will protrude past the end of the slide. A more compact option for your Canik that I'd recommend is the Streamlight TLR-8 Tactical C4 LED Weapon Light w/Laser, found by using the link below:
https://www.opticsplanet.com/streamlight-tlr-8-weapon-light.html?_iv_code=SQ-LS-TLR8-69410
Yes, the Streamlight TLR-10 Gun Light will fit a Glock 21. The Streamlight TLR-10 Gun Light will mount to the Glock accessory rail.
Yes, the Streamlight TLR-10 Gun Light With Red Laser will mount to the picatinny accessory rail on the HK45 Tactical.
The Streamlight TLR-10 Gun Light With Red Laser will fit a Glock 19X.
The Streamlight TLR-10 Gun Light With Red Laser And Rear Switch Options will fit a Glock 34 Gen5.
The Streamlight TLR-10 Gun Light With Red Laser mounts to picatinny accessory rails. So it will mount to the Beretta 92X Full Size model.