Umarex Beretta 92 FS Spring - SB199 Compliant. When you acquire a BB or Airsoft pellet in the chamber the impact will be reduced such that BBs are no longer sucked into the breech. This allows the shooter to maintain a consistent "Firing-State" position and fire with consistent velocity and accuracy; the pivot pin must not be in the up position during firing or it will be difficult to obtain a consistent shooting angle and force. The Spring is durable and can be fixed or replaced when necessary. Specifications for Umarex Beretta 92 FS Compliant Airsoft Pistol Spring: Manufacturer: Umarex Gun Model: Beretta 92FS Gun Make: Beretta Package Contents: Umarex Beretta 92 FS Compliant Airsoft Pistol Spring What firearm models does the manufacturer say Umarex Beretta 92 FS Compliant Airsoft Pistol Spring is compatible with? The manufacturer says that Umarex Beretta 92 FS Compliant Airsoft Pistol Spring is compatible with Beretta 92FSUmarex 2280070: Beretta 92 FS Spring - SB199 Compliant