Hidden - INTERNAL - OOO - 80 Percent Arms

Legally build your firearm at home in most states.

5-axis CNC milled to exacting tolerances.

Patented Easy Jigs make finishing straightforward.

Lifetime warranty against manufacturing defects.

No FFL transfer needed. Delivered directly to your home.

Machined from solid 6061-T6 billet for strength and corrosion resistance.

Actively challenging ATF overreach at the Supreme Court.

Designed and CNC machined in the USA.

10+ years serving the builder community.

No machining experience needed. Step-by-step instructions included.

Creators of the world's first router-based 80% lower jig.

Real help from builders like you.

Most items ship same or next day.

Trusted by some of the biggest brands in the industry.

INTERNAL - OOO