Rail ID needed

[RadScorpius]

Can some one ID this rail?

http://www.aimpoint.com/fileadmin/user_upload/2015_Web_Content/Product_Action_Images/Comp_Series/CompM4s/3313.jpg

[Dionysusigma]

ARMS S.I.R.?

[D_M]

ARMS S.I.R.?

Looks about right.

[Large]

A.R.M.S. SIR with M-CV mod


Sent from my iPhone using Tapatalk

[RadScorpius]

Thanks!