The barrel, magazine, hand guard, pistol grip, trigger, and trigger guard are some of the most popular accessories. A receiver, which is made up of springs, levers, and pistons, is a part of every firearm. It's critical to distinguish between a firearm's essential parts and its additional parts and components.
Any pistol with a barrel less than 16 inches and a maximum overall length of 26 inches is referred to as an AR pistol. A vertical foregrip cannot be attached to an AR pistol. You can employ a tiny handstop or an angled foregrip. The legal standard for vertical grips is a 90 degree ruling.