Released in April 2015 via the Falchion Case, the MP9 | Ruby Poison Dart sits at the Restricted tier within The Falchion Collection.

The float range for this finish is restricted to 0.00–0.50, so Factory New, Minimal Wear, Field-Tested, Well-Worn, and Battle-Scarred are the only obtainable conditions on the open market. The restricted range is set by Valve at the time of release.

A StatTrak™ version is available, which tracks confirmed kills made while the skin is equipped and typically commands a premium over the standard finish. Active listings for MP9 | Ruby Poison Dart are tracked across 18 marketplaces, with prices spanning $1.16 to $14.67 depending on wear, variant, and seller.