DX has a P7 reflector for C & D M@gs that has a really smooth hotspot/corona. I bought several to keep on hand for future use.
No donut hole at all.
If you get this be a little careful. The reflcctor sits on top of the LED for best focus. One member cranked down too hard and broke the solder tabs on the LED making his light useless.
The reflector was originally designed for the WF-500 series of flashlights and the front bezel of a M@g would not screw down all the way leaving a small gap between the bezel and head.
The stock M@g reflector has artifacts however it is focussed. The donut hole is at tightest focus but slightly defocussing it will get rid of the donut but artifacts remain. Can confirm the DX reflector has a nice beam. M@g P7 with DX reflector on left. MTE 5 mode 900 Lumen AHEM on right.