M LOK Rail Section Polymer 11 Slots in stock providing a forward sling attachment Kleur:Everglade providing a forward sling attachment point for the Magpul MS3® Sling and other clip in sling systems They were made of Rip Stop fabric (65% cotton 35% polyester) which makes the pants light and durable Magpul is one of the most active company in high tech polymer and composite firearms accessories market all the time listening to the needs of shooters