[Z-Parts] Mk12 Mod1 Handguard & Steel Barrel for VIPER M4 GBB

• Suitable for VIPER M4 GBB
  
• Steel flash hider adapter-M14-LH 
  
• All steel parts: full CNC machining, manganese phosphate surface treatment
  
• All aluminum parts: full CNC machining, coated with hard anodizing in MIL-STD
  
• Aluminum handguard: aluminum extrusion, full CNC machining, coated with hard anodizing in MIL-STD
  
• Aluminum handguard and steel threaded muzzle kit exactly copy genuine parts
  
• Suitable for Mk12 suppressor

• Part No.:  VIPER-M4-008
• Colour: Black 
• Compatibility: WA M4 Gas Blowback GBB Series
• Weight: 1850g* 
• Material: Steel and Aluminum 

Package Contents:

1.  Steel outer barrel x1pc
2.  Steel barrel nut x1pc 
3.  Aluminum handguard x1pc
4.  Aluminum handguard nut x1pc 
5.  Steel gas block x1pc 
6.  Stainless gas tube x1pc
7.  Steel threaded muzzle kit x1pc
8.  Steel flash hider adapter  x1pc