cc-settings-icon BUILD AT HOME
80% Arms sells AR-15 and .308 80% Lower Receivers, 80% Lower Jigs and other accessories which allow you to legally build a firearm at home in most states.
We utilize state of the art 5-axis CNC machines to mill all our .308 and AR-15 80 percent lower receivers to incredibly precise tolerances using premium billet aluminum.
We also offer our patented AR-15 and .308 Easy Jigs® which is the first 80% lower jig that makes it ridiculously easy for a non-machinist to finish their 80% lower in under 1 hour with no drill press required.
Products manufactured by 80% Arms carry a lifetime warranty against manufacturing defects. We will promptly replace or repair any product that we determine to be defective.

Buffer Tube Kit Bundle

Calculated at Checkout
Norton Shopping Guarantee

Sometimes all you need are the essentials and that's exactly what we have here. Our Buffer Tube Kit Bundle has got all the basics you need for the start of a new AR15 build. You can take this as a starting point and build out your rifle with any type of upper or length you so desire. Happy building!


  • (1) 80% AR-15 Billet Lower Receiver
  • Smith Defense AR-15 Lower Parts Kit (Mil-Spec trigger assembly and safety lever, A2 Style Mil-Spec Pistol Grip)

  • Buffer Tube Kit (Buffer weight, buffer spring, buffer tube, castle nut, end plate, detent and spring)


Shipping Restrictions: 

This item is restricted from shipping to the following: California, Colorado, Connecticut, Hawaii, Illinois, Maryland, Nevada, New Jersey, New York, Oregon, Philadelphia Pennsylvania, Rhode Island, Washington, Washington D.C.

Under California law, this product is or contains an unserialized “firearm precursor part” and cannot be sold into the State of California. 80% Arms cannot accept any orders of this product for shipment to the State of California, or to any customer who is a resident of the State of California.