Browse our selection of lower receivers for AR 15, AR 10, and 9mm. We offer stripped lowers, complete lower assemblies, and partial lower assemblies. Each lower features a Magpul-style trigger that has been machined in and is designed to fit Mil-spec uppers. All of our lowers are machined in house in our Minnesota facility, from billet aluminum, and given a hardcoat black anodized for superior quality, durability, and performance. Whether you are looking for a AR 15 lower receiver, a AR 10 lower receiver, a 9mm lower receiver, or lower parts, SOTA Arms will set you up for success!
80% Restricted States Not Available to: California, Colorado, Connecticut, Delaware, District of Columbia, Hawaii, Illinois, Maryland, Massachusetts, New Jersey, New York, Pennsylvania, Rhode Island, Washington
Are “80%” or “unfinished” receivers illegal?
Receiver blanks that do not meet the definition of a "firearm" are not subject to regulation under the Gun Control Act (GCA). ATF has long held that items such as receiver blanks, "castings" or "machined bodies" in which the fire-control cavity area is completely solid and un-machined have not reached the "stage of manufacture" which would result in the classification of a firearm according to the GCA.
The following three photos are provided as examples. The first receiver has a solid, un-machined fire-control cavity area with no holes or dimples for the selector, trigger, or hammer pins. It does not meet the GCA definition of a firearm. The second receiver, shown from the top, likewise has a solid, un-machined fire-control cavity area. It does not meet the GCA definition of a firearm. The third receiver has a partially machined fire-control cavity and does meet the GCA definition of a firearm.