Fostech is one of the more innovative companies out there. They have been a leader in binary trigger development, Origin semi-auto shotguns, and now binary-equipped AR-15s and 9mm carbines! Their shotguns have interchangeable barrels, ten round mags, and are capable of taking 30 round drums! This might be the most fun firearm brand out there. They are also built tough for extreme use so you can be confident they will work when you need them.