MP-412 REX
The MP-412 REX ( Revolver for Export; ) was a Russian double-action/single-action revolver designed by the state-owned Izhevsk Mechanical Plant ( IZHMEKH ) , with a break-action chamber and an automatic ejector , chambered for the . 357 Magnum round . 
<triplet> MP-412 REX <subj> Izhevsk Mechanical Plant <obj> manufacturer <subj> .357 Magnum <obj> ammunition <triplet> Izhevsk Mechanical Plant <subj> MP-412 REX <obj> product or material produced