http://shop.ehobbyasia.com/saa-m4-22-p- ... hider.html
Two versions of the new SA80 flash hider. One is slightly shorter than the other and is marked S.E.I. on the spanner flat which stands for Smiths Enterprize Inc. and is the Vortex flash eliminator. With its angled slots it is said to completely eliminate muzzle flash and therefore save lives by not giving away the location of a soldier.
ОНО?