The Barrett M90 was designed and produced from 1990 to 1995 as a bolt-action alternative to the semi-automatic Barrett M82. It is a bolt-action rifle in a bullpup design. The M90 features a fluted barrel with integrated muzzle brake, 2 part receiver (upper and lower), folding bipod, and a 5-round detachable box magazine. The M90 has no iron sights, but instead has a Picatinny rail for mounting a telescopic sight.
In 1995, Barrett stopped production of the M90 and replaced it with the Barrett M95.