The following is in the comments from Ken. I thought it deserved a lot more visibility.
The reason that anti-gun fanatics always associate guns with sex is this: for them, gun control is a sexual strategy. In a gun-controlled state (whether a "state" like Red China or a "state" like New York State), alpha males--consisting solely of violent thugs, policemen, and men who are rich enough to afford private security--are completely dominant, and typically have two or three women each. Since these alpha males consist of perhaps 10% of the population, 90% of the males are competing on roughly even terms for 75% of the women. For the typical beta male, that is, the average working stiff who is not a coward but has neither the time to become a good fighter nor the money to hire others to fight for him, this is a very bad deal.
However, for the perhaps 20% of males who are omega males--natural cowards--this is actually a good strategy. When no man can stand up to the thugs, the distinction between beta males and omega males is eliminated. For someone like "Jscottfur," this means that his chance of being with a woman rises to 75 out of 90, whereas in an armed society, he'd have as much chance of getting laid as Joan Peterson has of being elected NRA president.
Basically, the sexual aspect of a gun that scares Jscottfur isn't that it's a substitute penis. Rather, it's a substitute fist. It reduces the difference between alpha and beta males, while exposing omega males like him as the cowards they are.
This is consistent with an observation I have made a couple times before. Men who support gun control look and act like sheep.
Even "Acting President" (the "alpha" of the entire Brady Campaign organization) Dennis Henigan has the look of an "omega male".