The weapon is based on the
Heckler & Koch G3 and
HK91 design, which itself is a variant of the Spanish-made
CETME rifle. The United States
Federal Assault Weapons Ban enacted in 1994, by President
Bill Clinton, prohibited certain cosmetic features of the HK91, which meant that the HK91 and its variants could no longer be manufactured and sold to the US civilian market in their original configuration. Furthermore, German-made HK91s were specifically prohibited from importation under an import ban enacted by President
George H. W. Bush in 1989. Subsequently, Heckler & Koch ceased manufacture of the semi-automatic G3-variant, the
HK91. The PTR-91 was developed to fill perceived void in supply as an American variant of the original G3 battle rifle. JLD Enterprises (founded in Farmington, Connecticut in 1997 by Jose Luis Diaz) purchased prints and tooling from
Fábrica de Braço de Prata, an H&K-licensed, military factory based in Portugal. JLD then began manufacturing ban-compliant PTR-91 rifles in 2002. These ban-compliant models did not have a threaded barrel, bayonet lugs, adjustable stocks, or "high-capacity" magazines. Very early models were produced directly from the Portuguese prints and were nearly identical to the HK91 with the exception of modifications for compliance with the
Federal Assault Weapons Ban of 1994. Once the ban expired in 2004, JLD began offering a wider range of PTR-91 models, many of which featured more of the original military features of the storied G3. JLD also began investing in research and development and debuted new improvements and modifications to the original HK91 design. Initially, JLD-produced rifles relied heavily on imported military surplus components to complete their G3-variant. Most parts between HK-91 and PTR-91 guns were and continue to be interchangeable. In 2005, the major assets of JLD Enterprises were purchased by the newly formed PTR-91 Inc. Mr. Jose Diaz, JLD's founder and owner, stayed on with the new company as a major partner. Mr. Diaz left the company in late 2010. Subsequently, the remaining partners and new management changed the strategic direction of the company. PTR moved from a business model of surplus part importation and assembly to that of a true self-reliant manufacturer, featuring in-house production. The company added significant machining and fabrication capabilities in 2011 and 2012 to accomplish this change. Currently, PTR is capable of producing every machined part on its rifles at its plant, and sources other items, such as the plastic accessories and furniture, locally in the United States on tooling that it owns. As a result, current PTR rifles are made and assembled in the United States. In 2014, PTR relocated to Aynor, South Carolina, and was formally incorporated as PTR Industries, Inc. in South Carolina. ==Variants==