Spartan117gw talks about the upcoming PTS Syndicate Enhanced Polymer Back-Up Iron Sights or EP BUIS. Just as its name says this uses the Dupont Zytel High Performance Reinforced Polymer to make it durable and lightweight. The set is adjustable for windage on the rear and elevation on the front sight and has dual apertures with ergonomic aperture plate. This product will be available this month.