Features:
First CO2 powered GBB Airsoft MP40 SMG
Open bolt GBB system
Durable full metal receiver construction
Realistic blowback action
Steel upper body with fixed iron sights
Aluminum folding stock
Adjustable Hopup Accuracy System
 
Infornmation:
Model: MP40
Materials: Steel, Zine Alloy, Nylon, Rubber
Length: 610/902mm
Weight: 3500g (7.40 pounds)
Power Source: CO2
Action: Auto Only
Ammo Type: 6mm airsoft BBs
Ammo Capacity: 30-round full-size metal magazine
FPS: 410
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 
SRC MP40 AEG Magazine ( High Cap &Mid- Cap )