Get a stealth dongle and run silent what you need or use a program module to slot a wrapper program, then make the things you want to hide look normal.
On a revolver I see no reason to go with wireless enabled unless you are using a smartgun, periscope, or ammo selection. If you plan to be in shitty areas, those wireless features may not even work (notice equal to device rating kills wireless functionality, FYI). Invest in noise cancelation devices if you plan to use wireless. Also, batteries. Electronics don't run on nothing. So of this is a gun you intend to leave sitting for a rainy day, don't count on it turning on with full power. Anyone with a game boy they haven't played in months can attest the battery is likely dead or almost dead when you turn it on. Not a great state of affairs on gear you are counting on. Of course, many GMs don't bother with this level of detail (but I'm a great nut, so...)