AR15, AR10/LR308 & AR9/PCC Lower Assemblies
Our Lower Assemblies come fully assembled, and our standard & upgraded components meet or exceed the Mil-Spec standard for form and function. Pair one of these AR15, AR10/LR308 or AR9/PCC lower assemblies with an AR15Parts.com upper assembly and you will have a reliable, effective, and great looking weapon.
AR15Parts.com components are sourced from top US manufacturers including Aero Precision, Anderson Manufacturing, ZRO Delta, and others. Each lower assembly has options to select Lower Parts Kit, Safety Selector, and Anti-Walk Pin style. Trigger Upgrades and other lower parts are available individually on our website. If you upgrade your trigger, we will happily install it for you in your lower assembly.