Features:
Durable carbine receiver with matte anodized finish and stamped G&G rollmarks, mimics the popular billet style of receiver
Adjustable PDW style collapsible stock with stock tube
5" M-LOK handguard is compatible with all M-LOK accessories
Ergonomic motor grip with enhanced trigger guard allows for easier use of the carbine with gloves
Flat faced competition style trigger, textured selector switch and mock bolt catch provide the ARP9 with aggressive details
Integrated MOSFET protects wiring and is programable to fire either 3-round burst or fully automatic
ETU (enhanced trigger unit) improves trigger response and cyclic rate
Infornmation:
Model: SMC-9
Materials: Steel, Zine Alloy, Nylon, Rubber
Length: 500/590mm
Weight:2350g (5.1 pounds)
Power Source: AEG
Action: Semi/Auto
Ammo Type: 6mm airsoft BBs
Ammo Capacity: 350 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 
PS:
50 rds Mag for G&G SMC-9 and GTP-9