A.R.M.S. S.I.R. #50 Bi-Level Rail System & A.R.M.S. M68 low mount for Aimpoint, ARMS handguard grip and a ARMS 40 A2 BUIS. Free floating rail system with slight mount marks on rails. Works precisely as engineered and is a tough rail system. The M68 mount has only been taken off once. Great system, the reason for selling is that I'm making all my ARs compatible.

Aimpoint sight not included.

$350 shipping included.

Looking for a S&W M&P 22 pistol.


Email for a faster response. You can see a picture of it assembled on my website at: