Supreme Ct denies cert in three 2A cases
Note here. The cases are Lane v. Holder, NRA v. ATF, and NRA v. McCraw.
No way to know the reason(s), of course. All we know is that no case got four votes to grant the writ. Perhaps they don't want to take on a "bear arms" case, or at least just now, perhaps they want away from the 2A for a time, perhaps their docket was full of higher-priority cases, or perhaps these just weren't the cases they wanted (or, most likely, it was a combination of these).