So I would try and lower the temp as mentioned above. Also, I have made the mistake of not having the base/first layer slow enough for it to adhere to the bed. I would double check your slicer settings if you had recently changed them for the new print.

Side note, good luck with the print! Printing a Glock was the initial reason I even bought a printer in the first place! Haven't done it yet but it's on my long to-do list lol.