jackson43

Hey guys, I'm new to this forum and I've got a question. So I recently purchased an ergo f93 stock, and threw it onto my Sig Sauer 716. I used the spring and buffer that came with the rifle, and I'm having some trouble. When I pull the charging handle back, it doesn't come all the way back - preventing me from locking the bolt back. I think the buffer may be hitting the back of the buffer tube, but I'm not sure. Has anyone else had this problem/know how to solve it? Thanks!