Premium Billet 80% Lower Fire/Safe (3-pack) & Broken Arms 80% Lower Jig - AR15/AR9 (With Tooling)



Maybe you’re in the market for your first truly custom AR build. Maybe you want to try out some subsonic loads with 300 Blackout. You love 9mm and want to adopt that handgun round for a carbine. Why not build all three at once and enjoy some upgrades in the process? The Broken Arms Jig and 80% Lower bundle provides 3 premium billet receiver blanks and the tools required for crafting up some homebrewed AR-15 receivers without needing to visit an FFL.

(3) Premium Billet 80% Lowers Included
These billet receivers are each CNC’d from 6061-T6 aluminum and ship with “FIRE” and “SAFE” engravings and Type III Hardcoat anodizing. We also ditched those annoying roll pin fittings for threaded fasteners. No FFL is required to buy or own these receiver blanks and jig under federal law. Staw laws may vary. Please check our Shipping & Returns Policy to confirm your state is not restricted before ordering.

Lower Receiver Specs

  • Type III Hard Anodized
  • 100% Mil-Spec Fittings
  • Fire/Safe Marked: Yes
  • Billet 6061-T6 Aluminum
  • Broached Magazine Well
  • Threaded Pin Fittings
  • Made in the USA
  • Not considered a firearm

The Broken Arms Jig & Bits
The Broken Arms Jig uses a set of metal plates and Allen-head bolts to guide you along as you machine these aluminum blanks into proper lower receivers. The jig’s templates show you where to drill and how far to go. You simply operate the press and let the jig and bits do the rest. Speaking of bits, we threw in commercial-grade HSS bits so you can finish all your receivers in a matter of minutes.

What’s Required

  • Drill Press
  • Drilling Vise
  • Machining Oil
  • Eye Protection
  • Ear Protection

With your receiver fabricated, you can install a lower parts kit and buttstock or brace, throw on an upper receiver of your choice, and hit the range in a single day.

No FFL required  Made in the USA  Lifetime Warranty

Shipping Restrictions only ships within the United States. Federal legislation dictates we cannot ship our products internationally. Shipping of various parts and/or accessories are prohibited to states and locales (ie New Jersey, California, New York, etc…) with restrictions against certain parts and/or accessories (i.e. states with high-capacity magazine restrictions, manufacturing of semi-automatic weapons, etc..). It is your responsibility to be aware of your local firearms laws before purchasing from our website. We try our best to keep our shipping page current, but laws change daily.

We are a national retailer of individual components and not all products depicted on this website are legal in every state. Shipping of various products found on this website are prohibited to some states (such as California, Connecticut, District of Columbia, New Jersey, New York, Rhode Island, and Washington). The information, pictures, text or products presented on this website are not a representation by us, and should not be understood by you, that any product or completed firearm is legal to assemble or own in your state of residence. We encourage each and every builder to perform their own research about the state and federal laws that apply to them. It is your responsibility to understand the law and we encourage you to consult with an attorney or your local ATF representative.