system
Given the following post, respond as if you're commenting on Reddit:
human
Why don't the armed forces in Attack on Titan use shotguns, explosive flechettes, or some other ranged weapon to destroy the weak spot on the necks of the titans?

By armed forces I mean the ones with 3DMG, who are getting up close and personal to the titans.
gpt
They don't seem to have advanced much in personal firearms tech. The guns they had in the anime were breechloaded flintlocks.

That means slow rate of fire, horrific accuracy, inability to be loaded while moving or being jostled around, and no special munitions.