MP9 | Old Roots is a Industrial Grade-tier SMG finish, part of The 2021 Dust 2 Collection and dropped from the Stockholm 2021 Dust II Souvenir Package.

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 Souvenir version is available, dropped exclusively from cases collected during Major Championship matches and stamped with that tournament's stickers. Active listings for MP9 | Old Roots are tracked across 17 marketplaces, with prices spanning $0.01 to $20.27 depending on wear, variant, and seller.