Joeken's Carbon Fiber receiver

[Freiwilliger]

Has anyone tried to build on one the carbon fiber receivers that Joeken sells? I've never seen an AR built on one that I know of. What's the word on these? Good? Bad? indifferent?

Thanks.

[RJ Shooter]

I wouldn't, personally. They are Vulcan (Hesse) manufacture. They may have improved their quality control, but until I hear so, I wouldn't...