Whether you’re looking to start, finish, or upgrade your AR build for different applications, Guns.com has you covered. We’re proud to now offer a variety of premium quality AR parts at an affordable cost and convenient online shopping experience.
AR-15’s are traditionally broken down into two large categories, upper receivers and lower receivers.
The upper receiver consists of the barrel, gas tube, handguard, BCG (bolt carrier group), charging handle, upper receiver, and more.
The lower receiver consists of the buffer tube, buffer spring and buffer, stock, trigger assembly/pack, pistol grip, lower receiver, safety/selector, and more.
While there many more components found in an Armalite pattern firearm such as springs and detents, these are the main ones that are upgraded/needed for a build.