Silencers (mock suppressors) and flash hiders finish the look of a rifle or pistol, and some hide a tracer unit for night games. This section covers short and long silencers, flash hiders, tracer silencers and thread adapters.Check the thread before you order. Most airsoft rifles use a 14mm counter-clockwise (CCW) thread, while pistols often need an adapter. An airsoft silencer won’t make a gun much quieter, because most of the noise comes from the gearbox. A tracer unit lights up glow-in-the-dark BBs so you can see where your shots land. For grips and rail kit, see rails and grips.