Kip:
I'm real happy with the J Frame grip,and would very open to trying K and N when available, just email me what you need in payment. I'll post pictures.

One thing I used to do when sanding/filing plastics was to use Acetone on a cotton ball to wipe the surface after sanding, and it sort of "smoothed" the surface out, leaving no marks. Not sure if would wofk with the particular compound you are using or not.

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H Richard
SWCA1967 SWHF244