Rest assured, we are shipping all orders in accordance with the ATF rule and due to high demand it is taking us some time.
For concerns on how the rule affects our products view our ATF RULE FAQ page.
80 Percent Arms 80% 9mm lower receivers are machined to the highest quality standards using the most advanced CNC machines in the world. The machines we use are designed to manufacture spacecraft and aerospace parts which require extremely tight tolerances. The end result is the best quality 80% 9mm lower receiver on the market.
- Fully billet design
- Accepts Glock magazines
- Fire Safe / Safe markings engraved
- Threaded bolt catch hole
- Threaded hole for upper receiver tension adjustment
- Mil-spec part compatibility ensures maximum rifle customization
- Withstands the harshest punishment from any situation using ultra-tough design, precision machined from aircraft-grade billet aluminum for superior strength.
- Flared mag well aids with faster, easier magazine reloads
- Heavy-duty, integral trigger guard enables winter use with gloves
- Rear takedown lug pocket completed
Experience unparalleled quality with our lifetime warranty against manufacturing defects on our 80 lower receivers so you can build with confidence. Secure yours today and enjoy the satisfaction of creating your own lower receiver. No FFL is required. Just keep in mind that federal, state, and local laws may apply.
For more help and tips, be sure to check out our instructional videos HERE.
*Requires 9mm upper and 9mm bolt carrier group. Includes magazine release.
**Our 80% AR-9 lower receivers are designed to work with the "last round bolt hold open" feature in the upper receiver. The last round bolt hold open (LRBHO) is the function that keeps the bolt carrier group locked rearward on an empty magazine after the last round has been fired. For proper LRBHO function, please make sure to buy the appropriate upper receiver.
Can't decide between the AR-9 or AR-15? Let us help you.
Shipping Restrictions: This item is restricted from shipping to New Jersey, New York, Hawaii, Connecticut, Rhode Island, Washington D.C., Maryland, Illinois, California, Washington, Allenspark Colorado , Coal Creek Canyon Colorado , Eldora Colorado , Eldorado Springs Colorado , Gold Hill Colorado , Gunbarrel Colorado , Hygiene Colorado , and Niwot Colorado, and Denver Colorado.