The MTs-558 is a Russian manually-operated bullpup marksman rifle, designed and manufactured by the KBP Instrument Design Bureau.


The MTs-558 is derived from the VKS bullpup sniper rifle. It is available in .300 Lapua Magnum, .338 Lapua Magnum, and 12.7x55mm STs-130. It is fully ambidextrous.

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