Modular Guns: Assembling a SIG USW-320
This video features an assembly of a SIG USW-320 at SIG Sauer Parts (soon to be ModGuns). The presenter, interested in stocked pistols, demonstrates putting together a Universal Service Weapon (USW) based on the SIG 320 platform. The USW concept originated with B&T's CZ75-based pistol, and B&T later created chassis units for Glock and SIG pistols. The video highlights the modularity of the SIG 320, suggesting an easy assembly process for this stocked pistol configuration.













