Commando Barrel 36 (prototype)

Commando Barrel 36 is a prototype endurance and aim based barrel.

Source
Commando Barrel 36 can be crafted by Armstechs with a skill of ?? and Expert Armstech training.
 * Armstech materials

The schematic can be obtained by reverse engineering a.

Reverse engineering
Reverse engineering this barrel has a chance of teaching the schematic.