I just pulled the trigger on the M21A CULPM1 as it has a more usable beam. its about 8 dollars more expensive than the CSLPM1 version but i think its worth it since the beam is just more usable in the real world
I asked their aliexpress store about the official range as its not in the description. they replied with this.
M21A KW CSLPM1.TG 759 meters
M21A KW CULPM1.TG a little longer range