No glue with the M8, but the driver is soldered to the pill but not a big deal, make sure and grab the holster, it’s the only one they have for sale.
By the way if your a good at modifying lights the M2 that sells as a 2 AA light is another real sleeper.
I bought one and quickly realized that it will take a 17mm driver with a 16mm MCPCB, so needless to say it was time to convert that light to a 2 14500, not really recommending this over the M8, just a thought and a cool light.
Holster for M8
M8 Throw
M2 Sleeper light easy mod to 14500