For the sling, hands down....Gearsector.com. Jason Trusty is the guys name. He is awesome and customer service is top notch. I ordered 1 single point sling and a bunch of different adapters for various projects. I just leave the adapters on the firearms and hook up my sling to whatever I want to use. As far as the rig, I don't have one, but agree that Eagle would be the one for me.