The 45c is a strange beast due to the trigger guard geometry. I wish I had a definative answer, because I could use one for that purpose, too.
Edit: After a little google-fu, it appears that it should work (per HKpro). I went ahead and picked up a bundle. It will probably end up on an sbr (since no one makes holsters for my carry pistol with it) but I’ll test it on the HK45c first.
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