I've been using the Surefire Z70 rail covers on my Armalite M15TBN build and have loved them so I thought I better share. They are real grippy and fit very snug, about as low profile as you could get. The rail edges are still exposed some in the center which helps with the grip but the sharp corners are totally covered so no more accidental rail gouges. They are stiff enough to stay put but still flexible at below zero temps. I have the Magpul ERGO ladder rail covers on one rifle and LaRue rail clips on another, the Z70's have a much grippier feel by far. The Z70's are easier to put on and take off than the others. The LaRue clips still have an edge in wire routing capability but where I don't need a tape switch I'll be replacing them with the Z70's, the magpul covers will be swapped out as well. Price wise the Z70's are right with the Magpul ERGO's if you shop around and a bit cheaper than the LaRue's.
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