Not concerned, I have the TUSK modification to my Abrams. It also has the special CROWS kit. That's sort of like those car alarms that say "Step Away from the Car." but in this case they just shoot a 50 cal round. So it works great. Anyone within 20 feet gets a 50 cal round dead center mass. Only problem is when I leave it on in traffic. It shot the crap out of this mini=van full of kids the other day. I thought I was in big trouble but when the cops came, their shock and horror turned to admiration of my tank. What started as a potential legal issue turned into a good time and all I had to do was promise to take them for a ride. They weren't even upset when the CROW malfunctioned and shot up one of the police cars by accident. It's done that before. Once I had dismounted and came out of the walmart to find it had whacked a bunch of folds. No biggie since they were warned not to get too close. So I hit the off button on the CROWS alarm system but I found out it didn't disable. Dang thing, I realised it at the last second and jumped out of the way just in time but it still shot half my foot off. A mere flesh wound.
Oh well.