Top Rail for HK UMP and USC Platforms

I have a polymer top rail here for the UMP/USC platforms. This an excellent option for those who want to keep their UMP/USC lightweight while not sacrificing durability.

The rail is made from High-Temperature Polyamide reinforced with Carbon Fiber (PAHT-CF). The base material is PA12, which is tougher and more chemical and heat-resistant than PA6 (which is typically used for accessories). PAHT-CF is typically twice as expensive as PA6 but is the best in class for your needs.

I am asking $45 + shipping for one rail or $90 shipped free for two or more. I can include mounting hardware for an extra fee upon request.