The SIG Sauer 200 STR was launched in 1989, and became approved for Scandinavian rifle competitions from 1 January 1990 in the calibers .22 LR, 6.5×55mm and 7.62×51mm NATO.

[5][6] The 205 design was however not put aside, since it was deemed more suitable for the competition rules within the CISM and ISSF 300 meter disciplines.

The wood stock has a two piece design with a separate forend and buttstock, eliminating the need for bedding the action.

The stock was made out of dark walnut, had an adjustable cheek rest and length of pull, and an integrated UIT rail on the underside of the forend.

It had a two part laminated beechwood stock with an adjustable cheek rest and length of pull, as well as an integrated UIT rail on the underside of the forend.

[2] The Supertarget and Phantom differed by having a skeletonized chassis stock in anodized aluminium with an adjustable pistol grip made by Hämmerli.

The Phantom was a sniper model introduced at the 2005 IWA-show,[13] and was also marketed in the USA as the Sauer ATLR - Advanced Tactical Long Range.

A .22 LR conversion kit for the 205 was also available, consisting of a separate bolt, barrel and magazine, but is no longer produced.