What advantages do submachine guns which have the magazine integrated into the grip, like the Uzi and MAC-11, have over designs like the MP-5 and Intratec TEC-9? - Quora
UD380 "Upper-Decker" ultra light carbine finished and ready for testing. Support free printing. One spool of filament. Compatible with ALL AR trigger groups. Fully DIY. No welding. All components available at hardware
What is the most compact submachine gun known to man? - Quora