Real time inventory.  No backorders.

Lower Parts Kit

Lower Parts Kit

A Lower Parts Kit is a vital component of any AR build. The lower parts kit includes the hammer, stainless trigger, magazine catch, takedown pins, detent springs and other vital accessories for your lower receiver. A lower parts kit is absolutely necessary to convert your 80% lower receiver from a piece of aluminum to a fully-functioning firearm quickly and cost-effectively. All of the components in these parts kits come in individually labeled bags for quick recognition and easy installation. We guarantee 100% Milspec fit and tolerances so you are not forced into buying a brand-specific, proprietary lower receiver. Regardless if this is your 1st or 20th AR build, you can order your lower parts kits with confidence from 80-Lower.com knowing that we guarantee our products, they are made in the USA and if you need anything, we are available to help you 24/7.

Lower Parts Kit Features

  • No FFL Required
  • 100% Mil-Spec Parts
  • Individually Labeled Bags
  • Stainless Assemblies Available
  • Made in the USA

Your build awaits you.

Compare Selected

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, Hawaii, 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.