A few days ago SMOS Arms released a picture of some rails that were in the raw. SMOS Arms is well know for their slim rails that they have OEM’d for other well known companies. What’s cool about these rails they shared are that they are Quad Rails and they feature a modular cutout system. One is for an AR with a standard Front Sight Post or you can add in a small rail section at the top creating a smaller cutout to be used in conjunction with the Noveske Switch Block or possibly other adjustable gas block systems. There really aren’t a ton of details available for these new rails just yet but just wanted to share the sneak peek with you in case you didn’t see it yourself. Of course as with all prototypes, we’ll have to keep watching to see how product units come out.