Project X 80% Lower (Billet, 3-pack)



People have their preferences for what they want out of an 80% lower receiver. Some would give companies suggestions on how to improve their 80% lowers. Others would tell them what features they would want to see added. Well guess what. Broken Arms listened. They listened to you, the customer, and your ideas and most popular requests. Because they give a damn. And that's exactly why they've revised one of their billet lowers for the tenth time, based on customer suggestions and feedback. They've dubbed it the Project X 80% Lower. And now, you can get three of them at a time in this three-pack.

Yes, Broken Arms listened to the words of its customers, and the result was an 80% lower that when finished by you, a real-world person, would serve you better than any billet lower you could buy off the shelf at your local LGS. How do we know it's better? Because these are your features. These are your suggestions. This is your lower. And we're delivering to you, three at a time.

Features of the Project X 80% Lower:

  • Hard black anodize type III (mil spec) DI sealed
  • Mil-Spec broached magwell
  • Glass bead blasted
  • 6-32 pin/screw for the bolt catch. (replaces roll pin)
  • Added nylon tipped screw in rear of lower. (removes slop between upper and lower after a lot of use)
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.