Im really hoping these deep thick fins and the mass of aluminum will really heat sink well, I’ll copper wrap whatever dropin goes in it and maybe some thermal paste? Ya’ll think a stock Streamlight Polytac tailswitch will be able to handle the amps of a real quality dropin? The original light ran on 2 CR123’s and I tried to mod it for an 18650 but there wasnt enough wall thickness in the sleeve to bore it further. I also recently bored my ASP Triad CR for work to accept 18650 and replaced the silly foam grip with knurled aluminum.