VFC Has their own Specification for their Gas Blowback Rifle. There has a number of players who doesn't know and Now SIXmm has chosen those out for you and easier to buy.
[MadDog] G Style SMR Tactical Rail Handguard[DDC][10.5inch
Absolute amazing quality product and great service overall! Prompt delivery time and item is thoroughly tracked with the chosen freight service. Well done!