Hello,

Do the new MI Combat Series Quad Rails require the green adhesive like other MI rails?  It looks like one of the screws goes through the barrel nut to prevent the forward movement that the adhesive does but I'm not sure.  

Also, any idea when the quad rail versions will come back in stock?

Thank you.

Don't worry about the green stuff.... I have never used it. All of my handguards fit snugly and do not rotate, and the notch in the barrel nut is for tje torque plate stud. That is what keeps it from moving forward. But, MI machines all of its products well, it will not slip with that plate and the bolts torqued down properly anyways.

I have a Gen 3 Quad Rail T Series that I didn't put the green adhesive on and it slid forward today on me  I had a picatinny bipod that I load up on with some forward body weight that I have attached on the front of the rail, which is probably the reason it pulled forward.  I put the proper torque on the screws and all but it still moved.  It got me thinking about the newer combat rails that don't use adhesive as they seem to be locked in through a screw - better in my opinion than the green adhesive.  

That's why they redesigned the barrel nut to take that tab with the new design. The Combat Rail, T Series, and the SLH is a product improvement on the Gen 3. And now they have the Gen 4 that takes that barrel nut and tab.

Yep - I actually thought I was buying the combat rail, but accidentally purchased the T-Series Gen 3  :  (  

Doubt I'll get a refund on it.  And now I realize there are no combat rails actually in stock anywhere.....

Can't hurt to bed the rail to the barrel nut & prevent marring of the mounting surface if removed/replaced.

I plan to use left over green adhesive from another MI rail on the ultralight weight combat rail, Ti barrel nut.