In the Below chapter in Callisto Protocol, you can find a Tactical Pistol Schematic, thanks to which you can get the second type of pistol. The walkthrough from our guide explains where the schematic is hidden and what is the requirement to print the Tactical Pistol.
Finding a Tactical Pistol schematic
The schematic can be obtained in the Below chapter. You can obtain it in the final part of the stage, shortly after encountering the first blind monsters.
You'll reach the fork shown in the picture (large L1 sign on the wall) and you have to choose the left corridor.
In the next location, after eliminating or avoiding the blind creatures, choose the passage between the rows of spikes (picture).
Explore the right part of the new location. The schematic is in the place shown in the picture. You must have at least 1 free slot in your inventory to take it.
Printing Tactical Pistol
You can upload the schematic after reaching the nearest Reforge. You won't get the weapon right away, as it costs 600 credits to print it.