I don't own any HKs. The extreme curl of the trigger on the hammer fired guns, and the trough on the VP9 both seem like they would irritate my finger so I've never tried any. I recently saw a review for the VP9-B and noticed it had no trough in the trigger guard, so it got my attention. But, in looking, there seem to be some with the trough as well. HK's website shows the trough. Does anyone know what the deal is? I have some interest in getting one but only if there is no trough. Pics of both below.