ORSIS is the trading name of Promtechnologies group based in Moscow, Russia. Specialising in the manufacture of centrefire rifles designed for a variety of military and civilian applications, ORSIS was founded in 2011 and is owned entirely by private investors. The company launched with the T-5000 tactical rifle, before releasing a number of civilian derivatives for both hunting and long range target shooting. The company is able to produce entire rifles, including stocks, actions and barrels, as well as being able to produce replacement barrels for third party firearms.
In 2012 ORSIS entered a joint venture to perform final assembly for a number of Glock products.
In October 2013 it was announced that American actor Steven Seagal would market for ORSIS, both marketing the firm's products as well as lobbying for the easing of US import restrictions on Russian sporting firearms. Seagal will also be designing and developing a new long range rifle with the firm preliminarily titled "ORSIS by Steven Seagal"
Alongside their centre-fire product line, development of a rimfire rifle for IBU Biathlon competition took place between 2011 and 2013 with the resulting rifle demonstrated to coaches and athletes in December 2013. Rimfire hunting rifles are also planned as derivatives of this system.