A bigger issue IMHO of adoption though, is liquidity. Right now, even if a store had a POS unit, the store owner would have to sit on the money.
Example: A store owner takes in $500 worth of guncoin for sale of some products. Assuming 30 santoshi value, that gives the store owner just under 4.2 million guncoin. If the store owner immediately dumps that on an exchange to convert to $cash, they'll be lucky to get 1/2 of that, as there's only so much coin wanted at 30 santoshi, then some at 29, 28, 27, etc, but they will got down to the bottom soon.
Unless they sit on the coin for later conversion, or trade it for other product or services. Lots of places aren't going to want to do that. The smart ones will, but even they will have a limit on how much coin they can hold if it interferes with cash liquidity to pay employees, bills, taxes, suppliers, etc.
You hit on one of the more important things that every one misses - liquidity. If a coin owner cannot liquidate it easily, it has no value to him. With bitcoin, you can sell something for BTC and then turnaround and buy something totally different 5 minutes later after it clears into your wallets from someone else. With GUN, based on our user base, we limit ourselves to the firearms community. While you can sell a gun and then buy bullets with the same GUN, someone on ebay is not likely to accept GUN for a payment for anything. That is why the exchanges play such an important role for GUN - more than other coins. This is where the GUN users can liquidate their coins to buy OTHER STUFF, other than firearms stuff. Maintaining a decent volume on these exchanges is essential to keeping GUN going. With no exchanges, we have no way to convince a non-crypto user to use GUN, he has no way to spend it, except on other GUN stuff which limits his useage. Getting kicked off of Bittrex was a killer for GUN. That was a major exchange and excellent visibility, but no one traded us and we died there. We cannot let that happen on the others. We continue to buy some coins on all the exchanges each day. With a price of 25-30 satoshi, damm315er is totally right - a firearm will cost you over 4MIL GUN or more. I think if we can get that price up over 500 to 1000, GUN looks like a very good option at that point. Are we there yet - no. Can we get there - absolutely. But not if we all sit around and watch. We think we have done quite a few things since taking over that have had a positive effect on the coin. Are we done yet - no. Do we have more to do - yes. Do we need your help - absolutely.
FYI, we just had a concealed handgun site who followed us on Twitter put an article up on his site about us today. Once he makes some changes, we will post the links......Please keep the ideas and discussions going!