The Guntec AR-15 Faux Suppressor has no sound reduction which means no paperwork, giving you the look of a suppressor without the hassle of paperwork. The realistic length and weight of this inert suppressor gives you the ability to train like you fight, even in areas that are not can friendly. Also protects your muzzle threads when you don't want to run the real deal. FeaturesLaser Engraved With Military Style MarkingsExtends Barrel Length 4.75 Inches5.5a ^2 Total LengthFunctions As A Barrel Shroud Note the 22 Caliber model is suitable for use with 223/5.56 and is also compatible with 9mm Luger builds that use 1/2"-28 threads.