Unlike the standard Gen8 M4A1 Blaster, this Gen8 M4A1 comes with a Stronger More Durable Receiver, and XMT01 PDW Buttstock, and a full metal handguard setup. The gearbox has been upgraded with a stronger Spring, and green oversized o-ring for better pressure.

Description:
– TOUGHER Nylon Receiver
– Full Metal 6.6 inch Quad Rail
– Full Metal Outer Barrel + Adaptor + Stabilizer
– Metal Triangle Aim with Sling Swivel Mount
– Alloy Threaded Flash Hider
– Nylon Grip
– Nylon Top Rail
– Carry Handle / Sight
– Nylon/Metal Rods PDW XMT01 Retractable Stock
– UPGRADED Tension Spring
– UPGRADED Oversized O-Ring

Package Comes with:
– CUSTOM M4 A1 Gel Blaster
– Magazine
– XMT01 Buttstock
– 7.4v Battery USB Battery Charger
– 7-8mm Dehydrated Gel Balls

Please Note that all gen8 gearbox only operates in full auto.