M5 Series is a German made 9mm submachine gun (SMG) family developed in 1960s. It is one of the most widely used SMG in the world, used by 40 nations and militaries, law enforcement and security organizations. It has over 100 variants, including the semi-auto version and the K (Kurz) Series developed in 1976, which designed for close quarters battle used by clandestine operations and special missions.

Features:
Metal front sight assembly.
Stamped Steel upper frame with polymer made front fore grip.
Polymer made Navy style lower frame with ambi selector lever.
Realiestic trigger group and hammer set.
Lower profile rear sight.
Constructed of WE Custon GBB System with Semi, 3-round burst and full auto function.
Adjustable Hop up system.
Comes with Rear body cap with Sling mount.
Realiestic break down same as real steel M5K SMG.
Ready to go for 280 – 300 FPS (Green Gas, 0.2g BB) without modification.
Included 25 rounds short type Gas Magazine which can adjust bolt stop mode (stop fire after finish the last round in magazine) and Blank mode (bolt will keep function after last shot until all gas has uesd).
Long type Gas Magazine will be avaliable soon.

Specifications:
Length: 320mm
Barrel Length: ~110mm
Shooting Mode: Safety, Semi-Auto, 3-round burst & Full-Auto
Weight (g):  2310 (gun with magazine), 2900 (with box)
System:  WE Custon GBB System
Power Source : 12KG (Green gas) 
Color: Black
Magazine Capacity: 25 + 1 rounds
Material: Metal, Steel & Polymer
Bullet type: 6mm BB
Power (Muzzle Velocity): 280 – 300 FPS (Green Gas, 0.2g BB)
Manufacturer: WE