Airsoft shotgun magazines primarily use one of three systems ( Realistic shotgun shells, Stick/drum magazines or M4 adapters. Capacity of around 30 BBs to hi cap electric/gas specialized mags holding 50 to 2000 rounds.
Shotgun Magazines
Sale
Nuprol 6 Pack Black Shotgun Shells - NEM-001-003
£9.99
£12.99