Rugged Suppressors Fixed Barrel Spacer allows more versatility when using the Rugged Obsidian. The Fixed Barrel Spacer replaces the spring in the Obsidian and is used with the Piston for use with fixed barrel hosts such as carbines and subguns. The Fixed Barrel Spacer is not to be used with the Fixed Mount or 3 Lug Mount.
| Manufacturer | Rugged Suppressors |
| Model | Obsidian Fixed Barrel Spacer |