LEGO Submachine Gun (Working) with LEGO Classic 10715 ||MOC|| Building Instructions (LEGO Gun :-6) - YouTube
LEGO Heavy Weapons: Build Working Replicas of Four of the World's Most Impressive Guns: Streat, Jack: 9781593274122: Books
Amazon.com: Simulation Electric MP5 Blaster Submachine Gun Building Bricks 788 Pieces, Educational Construction Toys Compatible with Lego : Toys & Games
Gun – Brick Replicas
Working LEGO Uzi SMG - Tutorial - YouTube
LEGO TECHNIC MP5 - The First Working Submachine Gun
Infected smg moc(instructions for base model in comments) : r/lego