Barska's AW11724 Picatinny Dual Offset Rail is an ideal device when you need to augment your sight or scope with accessories but you are running out of rail space. This dual offset rail allows you to mount lasers, flashlights, night vision optics, or other devices right behind or before your main optic without significantly sacrificing your line of sight and field of view, thanks to the absolute co-witness slot in the middle. The rail features a split configuration, in which two short Picatinny/Weaver rails branch out to the left and the right at 45° angles to horizontal.