AirTronic USA makes a range of small arms dealing in larger-caliber projectiles such as grenade launchers. In 2009, it debuted the American-equivalent of the Soviet-era RPG-7 as the PSRL-1 (RPG-7USA). A lighter-weight, recoilless rifle version of this weapon has emerged as the "GS-777" suitable for armor- and fortification-busting endeavors. As with the PSRL-1, the GS-777 is a single-shot, shoulder-fired system with reusable launch tube. It appears in 40mm caliber and its lighter weight is achieved through high-strength polymers which improve long-term fire and in-the-field reliability.
The GS-777 is compatible / backwards compatible with existing RPG-7 rockets. The tube is rated for 500 to 1,000 firings and features an L-3 Ballistic Sight Module (BSM) for sighting as well as back-up iron sights. Overall weight is 3.5 kilograms with an overall length of 915mm. Maximum range is out to 1,000 meters with effective range nearing 800 meters.
Sections of rail over and under the tube allow for the installation of various after-market add-ons such as grips, optics and aimers.