Faxon Firearms engineers and manufactures complete upper receivers that will fit any mil spec AR/15 lower platform. We are intensely focused on providing a new and innovative upper that will set the standard for the rest of the industry.
Slash at Heavy Buffers has done a lot for the AR community and a lot of is work has been ripped off. Support the original Heavy Buffers. His .308 Buffer and Buffer Spring are also available at Brownells.
Modular Driven Technologies aka MDT known for theTAC21 is the bolt action rifle chassis of choice of most well known manufacturers and consumers alike. They have become important in supporting this site.