I agree that pistols just weren't that common for the average soldier during the Rev war... but let me throw out some research for your general consideration: I'm currently finishing my master's thesis on the road (trail?) system in the Southern Appalchians before 1800 (Ok, some of you will find that fascinating, the other 90% will say "why?"... s'ok, I'm used to it by now!) Much of this involves tracking down primary sources of travelers, hunters, settlers etc., and I have come across references to pistols far more than expected. Normally when doing living history events and portraying a settler in this area I don't include a pistol as part of my kit, but based on what I've found I may start including one occasionally... I still don't think that they were really common, but based on the pre-1800 first person accounts FOR THIS AREA, they weren't exactly rare either. Keep in mind these weren't soldiers, just the average folks in this area: settlers, hunters and circut riders for the most part. Sorry, exactly zero references so far as to what kind of pistols they were...
Brian