Desert Tech HTI not put the muffler (Tom Clancy's Ghost Recon: Wildlands)

Today during a fight with a predator, the steamed pulled Glushak with Desert Tech by pressing F while aiming. The first time naprosen died. Filled up with the second oppidi. And here I run out of the woods with execution of the job. Look, and the barrel I have no muffler. And F is not displayed during aiming. To modify via the menu of the finished model is impossible, there is only viewing. In watching it's really a naked barrel, but in the game the compensator wound. The characteristics of noise reduction is also decreased. Reloaded. Reversed the different guns, but never returned Glushak. Has anyone encountered similar? Maybe with other guns..