Whether it’s video games, Stargate, or crazy-looking space guns, everyone can find a reason they want a PS90. FN designed the PS90 around the 5.7x28mm cartridge to create a carbine that offers a lot of firepower in a small package. While they can’t sell the original short 10.5-inch barreled model over the counter, the 16-inch PS90 is the next best thing. Although it looks strange, the gun is oddly ergonomic and is 100 percent ambidextrous — it even ejects downwards. Even though it is a direct-blowback gun, the 5.7x28mm cartridge is so light recoiling that your trigger finger will get tired running through the 50-round magazines before your shoulder does. The factory options for mounting optics leave much to be desired, but luckily the aftermarket has you covered. If you can stomach the cost of the gun and the ammo, then you will end up with a gun that is nearly unmatched in firepower for its size and weight.