But this isn't a Taliban attack in the heart of Afghanistan's capital it's just a friendly game of paintball.
The arrival of recreational paintball to Afghanistan may seem peculiar to outsiders, especially in a country that's known decades of war, faces constant bombings and attacks by Taliban insurgents and is preparing its own security forces for the withdrawal of most foreign troops by the end of the year.
However, it shows both the rise of a nascent upper and middle class looking for a diversion with the time to spare, as well as the way American culture has seeped into the country since the 2001 US-led invasion to topple the Taliban.
Rizaiy brought the game to Afghanistan just a few weeks ago. He's a longtime fan of the first-person shooter video game "Call to Duty" and stepped up to the next level by playing paintball in neighboring Iran where he was born.
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He moved to Afghanistan 10 years ago and eventually decided to open the club this year in Kabul, a city more associated with real bullets than ones that splatter paint.
For those who have never suffered a welt from the game, paintball involves participants geared up in helmets, goggles and protective clothing firing at each other using gas-powered guns that shoot paint pellets. The games can be complicated affairs that last for hours or as simple as a capture-the-flag contest that lasts only a few minutes.
"It is my first time that I came here, and I don't have any special tactics in this game," he said, with his goggles pushed up to his forehead and his weapon at his side.
Rizaiy said he hasn't had many issues with the neighbors, though he turned down the speed at which the weapons fire to reduce the noise. Instead, he said the biggest challenge was to get the paintball guns as the ones he imported from India got stuck for six months in Afghanistan's bureaucracy-laden customs department.