From Destinypedia, the Destiny wiki
VEIST specializes in all-purpose, highly advanced weapons for Guardians. The majority of VEIST's weapons are fast-firing and quick-handling, with a balancing set of perks and a unique appearance that sets it apart from the other foundries. VEIST weapons are designed and named to evoke venomous creatures, and each one includes an on-board artificial intelligence programmed with the "killer instincts" of its host weapon's namesake. This philosophy was inspired by the death of a man from a snake bite by the northern City wall.
VEIST weapons are noted to have a distinct, futuristic visual style. Many include bladed projections on the trigger-guard or elsewhere, giving them an aggressive appearance. VEIST weapons also use side-loading magazine wells, as opposed to the bottom-loading magazine wells used on most weapons.
VEIST offers a myriad of Energy Weapons to Guardians, including sidearms, auto rifles, fully automatic scout rifles, submachine guns, sniper rifles, linear fusion rifles, a sword for Hunters known as the Quickfang, and the new combat bow Arsenic Bite-4b. VEIST also manufactures weapons specifically for Dead Orbit.
List of appearances