For a Glorious 150 dollars, you can add a ridiculous pointy stick thingy to the end of your AR-15 barrel. Its purpose you ask? To stab tires. It attaches directly to your barrel over your flash hider, and you can supposedly fire your weapon with this attached.

As someone who’s worked checkpoints overseas, I still can’t see a use for this. Admittedly I was working a war zone checkpoint, and if a vehicle ran the check point, we had really effective ways of stopping it. Mostly ways that involved a machine gun.