Thought this might be the best site to help find something I'm needing. My brother left a few rifles with me when he deployed to have cerakoted for him. I've found the place that I'm going to have the work done, but when looking over the rifles I noticed that he left the thread protector off of his FVSR. He normally shoots it suppressed so it likely wouldn't be a huge problem, but I'd rather have a protector coated for it when it gets done. I know it's threaded to 1/2-28, but didn't know if the outside diameter and depth are the same. Does any AR protector work? I'd check with Savage, but their website says they are out until the 17th and I'll likely have them sent off by then.