It might be something to do with the pistol in a holster scripting clash with default, after the last bis update.
The RHSUSF & RHSAFRF certainly have some sound & objects errors to say the least after the last Bis update!
How many times have things just seemed to be running smoothly inc addons, & a Bis update screws everything up again!
My humble apologies to RHS it look like it ma be the @mas addon sorry!