I cant figure out why my AR won't charge a round when the bolt is locked back but will when I pull the charging handle back. Before I upgraded my extractor spring, buffer, and buffer spring my AR could easily charge a round by now it doesn't. It seems like my bolt carrier isn't being held back far enough. Here are a few pictures before and after. Any ideas? It might sound like a stupid question but I am a little puzzled. The extractor spring is a BCM, Spring is a JP enterprises, and the buffer is a Vltor H2.