Question about Laserlyte RSL laser

[HardCorps53]

I'm thinking about getting the Laserlyte rear sights laser for my Glock 23. I'm looking for feedback from anyone that has used it. I like the fact that it's small and runs on easy to get watch batteries but I'm leery of something so small standing up to the recoil. Any users out there? How do you like it? Any help would be appreciated.

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[mack1748]

I am also looking at the laserlyte rl-tm for my Taurus pt111 but would like to hear from someone that has one or used these rear sight lasers before I invest the money as I have never shot with a laser before.