M500 (Model 500) is a series of pump-action shotgnuns made in US. This Series of Shotgun comprises widely varying models of hammerless repeaters, all of which share the same basic receiver and action, but different in bore size, barrel length, choke options, magazine capacity and materials of stock and forearm. It also is the number one selling shotgun and second in total production to the M870 Pump Action Shotgun.

Features:
This shotgun fires 5 rounds of 6mm BB for each shot (Gas operated with pump action).
Come with metal outer barrel (16 inch in length) with dummy heat shield.
Fixed Hop up System.
Plastic hand guard with rubber cover.
Metal frame with plastic pistol grip.
Included a manual safety on top of the main frame.
Gas tank is stored in the shotgun chamber.
Comes with a tri magazine tube for loading 165 round BB bullet in total (each tube can put 55 rounds).

Specifications:
Length: 670mm
Barrel Length: ~400mm
Shooting Mode: Safety, Semi-Auto
System: Gas Operated (134a Gas or Green Gas), Pump action
Weight (g):  2830 (gun with magazine), 3630 (with box)
Color: Silver, Black
Magazine Capacity: 165 rds (55 rds per each magazine tube)
Material: Metal & Plastic
Bullet type: 6mm BB
Manufacturer: TERCEL