I believe they are called ferrules but not sure. They are the little metal that goes on the end of all housing. Just got a pair of tula's off the classifieds but there's one stuck in each side. The rattling is killing me and I even though about aligning my nokon and spray foaming the rest. Any ideas how to get this stuff out? It has 2 pins per side but I don't wanna break the bars...

Thanks