I suppose I've been reclassified now that Asperger's has been demoted to a ASD, but living it myself, even though you may not like to hear it, it may be wise of your mom to try to limit your "gun time" and refocus you onto other things. Part of our condition is a repetitious indulgence into one or two favored topics - which is a part of the disorder because it can be unhealthy. Instead of processing life stresses, or dealing with mental burdens (like studying for school, working on social interaction skills, developing relationships, pursuing new experiences), we'll bury ourselves into ONE topic.So it's not so much the passion for the topic is unsafe or unhealthy, it's the LACK OF PARTICIPATION OR DEVELOPMENT in other aspects of life which is the problem. I used to relate it to a weightlifter - if a weightlifter only focuses on their arms, they'll have huge arms, but their legs and back will be itty bitty. But instead of muscles, your case (or mine) will be big gun knowledge, and itty bitty social empathy.

Chill out a bit. Shooting sports and an interest in firearms history or design are perfectly healthy pursuits. But what you MIGHT need to work on, which you are not because you're spending too much time reading about guns and not enough in social interaction, is how you can communicate your hobby in a healthy, less "scary" way, and also develop your social skills to the point of NOT seeming to always revert any conversation back to guns (even though your mind might wander back to guns repeatedly during any given conversation).

It's not an easy thing to live with, but there are mechanisms to help you study social interactions to help you fast-forward that skill development, you might not otherwise naturally pick up.