Polymer80

Polymer80, Inc. was an American manufacturer of firearms parts kits that included unfinished receivers used for making privately made firearms. The company was founded in 2013 by Loran Kelley Jr. and David Borges and was headquartered in Dayton, Nevada. Polymer80 received press attention for the frequent use of its products in crimes involving so-called "ghost guns", which in specific cases resulted in lawsuits being brought against the company. In July 2024, Polymer80 ceased operations and began liquidating its assets.