ELCAN scope users can now have another ELCAN scope with the SpecterDR 5.56 which is mountable on the M4s as the name suggests, as compared to the more popular ELCAN scope seen on SAWs. Though the real deal is 4x/1x magnification, the replica seems to be more of 4x magnification only. If you can live with it, then it's yours for US$149 at eBaybanned. As always, free shipping.