Beretta 84F/85F/87/84 Trigger Spring. This OEM factory original trigger spring is manufactured for Beretta Cheetah 84F, 85F, 84 and 87 models chambered in .380 ACP and .22 LR. The trigger spring provides tension as the trigger is pulled and aids in returning the trigger to its original position once the trigger is released. This quality part is perfect as a spare on the workbench or as an immediate replacement for a lost or damaged component.