Ar15.com user [HaveBlue] has been working for some time on a 3D printed lower receiver, and now reports that the parts are fully working. Using a Stratasys 3D printer from the 90’s [HaveBlue ...

This one, the AR-180B, offered by the reconstituted ArmaLite in 2001, essentially an updated version of the original design, had a polymer lower receiver and used AR-15 magazines ... AR-180 while ...