Kinda late with my $.02, but yeah the HK will need an adapter. I know years ago some guys used to carry the compact model (undercover) and they had lights, I believe they were HK brand lights.
Finding a holster might be a challenge too, unless you find someone to make a coustom Kydex.
Thanks Viking. This weapon will reside in the pistol safe beside the bed. No holster needed.
