Features:
One of the most durable WE-Tech products.
Highly accurate performace.
Metal front ring sight with suppressor 
Stamped Steel upper frame with polymer made hand guard.
Polymer made Navy style lower frame with ambi selector lever.
Adjustable Hop up system.
Included 45 rounds long type Gas Magazine which can adjust bolt stop mode.
Infornmation:
Model: MP5 SD3
Materials: Steel, Zine Alloy, Nylon, Rubber
Length: 600/740mm
Weight:3100g (7 pounds)
Power Source: GBB
Action: Semi/Auto
Ammo Type: 6mm airsoft BBs
Ammo Capacity: 45+1 round magazine
FPS: 400
Bunker Tech Upgrades
Maple leaf gbb 6.02mm Inner Barrel
Maple leaf  High Accuracy Hop-up Bucking- Internal Parts Adjust
All function checks, to avoid common tolerance issues.
BB weight for optimal performance: 0.36 gram 
 
WE MP5 GBB ( Apache ) Mag - 45/30/20 Rds