Iraq already has a few armed Cessna Caravans. Getting permission to actually use them is a completely different problem, but they have the planes and they can shoot hellfires (and hit targets with them).
I think that Iraq wanted the AT-6 in part because of their experiences flying the T-6, but if they have maintenance problems with the T-6 or if Hawker Beechcraft's impending bankruptcy starts fouling up their support chain, then you can bet they'll switch in a heartbeat to whoever offers them a better bribe...er... "offsets".
While I was flying the T-6 in Iraq, I was asked a few times about my opinion of the AT-6 prototypes. I answered fairly honestly that it would probably get the job done but that any perceived weaknesses of the T-6 could carry over to the AT-6 if the contract requirements were not carefully defined. Like I would personally write in "must have tires that do not pop the instant anyone touches the brakes". In other words, I'd write in a requirement for a GOOD anti-skid braking system, because popped tires are one of the most stupidly expensive yet totally avoidable recurring ops/mx expenses in the T-6 today, even with highly experienced instructors at the controls. An ABS system in the original contract probably would have paid for itself by now, just from reducing the number of flat tires we are constantly seeing because the brakes give no feedback and the wheels lock up if you look at them sternly.
There are a few countries flying armed or otherwise missionized T-6 variants, and from what I've heard they are fairly successful. But there are a few competing designs out there including the heavily armed and armored air tractor variant of their best cropduster. It isn't sexy because it has fixed gear, but it's a freaking tank. It is basically a 2-seat turboprop powered A-10 (with built-in IR/EO targeting pod) that can take off in about 800 ft and land on a 20 ft wide bumpy dirt road. Crazy good at what it does, but not very fast and certainly not very sexy. But they're selling fairly well and also apparently doing a great job flying combat ops.
There is a big enough potential market for light armed aircraft that the USAF was even considering remanufacturing OV-10 Broncos for sales overseas. That would have been a hoot to fly, but I guess the cost/benefit numbers didn't work out right so I think it was dropped.
