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AR Uppers & Upper Receivers

AR 10 & AR 15 Complete and Stripped Upper Receivers

For the dedicated firearm builder, military professional, or weekend hobbyist, one thing is true: nothing beats the feeling of building your own rifle.

Of course, if you’re going to build your own rifle, you’re going to need the most durable parts, and that goes double for upper receivers. The upper receiver provides housing for some of the most important parts on a rifle like the hammer and firing mechanism, and using a sub par receiver can affect the performance of your entire rifle. Thanks to the durable construction and precision engineering of 80% Lower uppers, your AR build is in safe hands.

80% Lowers offers one of the widest selections of AR upper receivers around, from AR10 uppers to AR15 uppers and even complete kits. Designed for the 5.56 rifle of your choice, our kits replace the entire upper of your AR and can include quad rails and keymods for compatibility with the accessories of your choice. Available in a number of finishes and designs, from military-styled to classic AR builds.

Once you have your new replacement upper installed, finish off your build with our AR 15 80% lowers and AR parts to build the rifle you’ve always wanted but could never buy at the store.