>>63994282 (OP)If it's just some asshole prowling your steadhold then you want a pulse carbine. Raytheon Lux's Pulse Maser 31 is a good choice. Lightweight, rechargeable, easy to clean, easy to use, has both lethal and non-lethal settings but doesn't have an anti-materiel setting without modding. Even after modding it's still useless if the enemy has armor thicker than sheet metal.
If you Actually have a local militia causing problems then you want the KoShine 20 Coil-rifle . Note, this was intended for use with power armor so using it on it's highest setting will Absolutely break your collar bone without a hardsuit. Most ammo is compatible with your typical fabber. Scatter shot, slugs, flechettes, just about anything that fits in the magnetic sabot will cycle but the KoShine works on preprogrammed timing so you've got to tag every magazine with the right RFID chip.