Highlander Airsoft features the Begadi Sport Metal Shotgun "Shortrider" which is based on the CYMA CM.357 Shorty. This is a tri-shot spring powered pump actiomn shotun that has a 20mm toop rail, push through sagety, and the shell can hold up to 30 rounds, allowing you around 10 3-round shots per shell. This is compatible with the Tokyo Marui shotgun shells.