Energy Knight's Type Rail Cover Set (2/4/5/6 Ribs x 2) Black
[AS3469]

Looks perfect on my M416! They are nice and strong and are a good colour, Only problem is some are stiff and others are loose but I do think it also depends on your gun. I do advise wearing gloves if you don't have tough hands I could have had some nasty cuts if my hands weren't so weathered!