If your Glock G48 MOS has a tac rail.. then YES... the Nightstick TSM-14G is the model you are looking for. If no tac rail.. then go with the Nightstick TSM-11G. Both models are magnetic couple charging, so the USB cord plugs into your power source... and the magnet snaps to the charging port at the bottom of the light so you don't have to take the light off the weapon to charge. Just make sure the weapon is charged in a safe with a portable battery charger, or use the included cable lock. Hope this helps.
The Nightstick Subcompact Weapon Light is not compatible with the Glock 19 Gen 3. This light was specifically designed for non-railed versions of the Glock 43, 43X, and 48. If you are looking for a light and laser combo, I would recommend the Streamlight TLR-8A Weapon Light and Laser which is compatible with the Gen 3 Glock 19 and can be found by using the link below:
https://www.opticsplanet.com/streamlight-tlr-8-a.html
The Nightstick Subcompact Weapon Light W/green Laser is not compatible with the PSA Micro Dagger. This light is designed specifically for the Glock 48 and 43X which don't use an accessory rail. Because the Micro Dagger uses an accessory rail this light would not fit.
No. However, Nightstick's TCM-550XL-GL with a green laser will.
The light is covered by Nightstick's 2-Year Limited Warranty. Any direct return policy is subject to the seller's discretion.