Strike industries gridlok lite - Strike Industries Grildlok Lite AR-15 M-Lok Handguard Assembly

I really like SI. Their products have never failed me until now. The barrel nut is un-timeable. Shims, no shims, it doesn’t matter. Now let’s just get it out of the way that I use shims between the handguard and barrel. But it’s to the mere 1/4” that the barrel nut won’t line up with the gas tube channel. I spent a week emailing SI about the issue and requesting to get their prior barrel nut design with the divots or channels but they said they discontinued that design. Their response in the current problem I was having was to cut a channel of my own with a dremel tool. Gotta say that’s not the way I build my machines but it did work. Looks great. Very versatile and the quick release design is something that actually sold me to buy it in the first place. I also like the integrated front iron sight but the mere fact I had to fabricate my own means to getting it to work blew me away. So the stars I give is for the quality, anodizing and design but I left the rest blank for bad mounting design.