It comes packaged with the Praxis.
The Praxis shoulder stock looks similar to the Recon CS-6's shoulder stock, though it is notably more sturdy. Unlike the Recon CS-6, it cannot store accessories for holding extra ammunition. The general appearance of the back of the stock is very similar to the Raider shoulder stock as well.
The Praxis shoulder stock has been released under the following color schemes:
- Standard (green)
- Sonic Series (transparent green)
- Re-release (orange, grey, and white)
- The Praxis shoulder stock was the only Vortex stock released.