How to build an AR15

Building your own AR15 is fun, and you will know every part inside out. If you can follow directions and use basic tools, you can do it.

The two halves

  • Upper half: barrel, bolt carrier, charging handle, handguard, sights
  • Lower half: receiver, trigger, stock, buffer and grip

The easy way

  • Buy a complete upper
  • Buy a complete or stripped lower and a lower parts kit
  • Snap them together with two pins

Tools you will want

  • Armorer’s wrench
  • Punches and a small hammer
  • Vise and upper/lower vise blocks
  • Torque wrench
  • Grease

Start with the barrel, then add parts until it is done. See AR15 Tools too.

Watch

AR15 Parts Breakdown
Tactical AR15 Build FAIL