Several weapons, including some in Urban Renewal, often experience a bug where attachments flash and disappear. The most common weapons that have this problem so far are the Desert Deagle and Glock, but the Glock is more likely to experience this when I switch to another weapon and switch back to the buggy weapon. For example, the Glock attachment suddenly disappears when fired, usually flashing. I've experienced this bug on several other weapons, such as the M16, AWP, etc.

Please fix this bug. It seems this bug hasn't been fixed since I stopped playing Gmod at the end of 2023.