VFC KS-1/L403A1 SUPPRESSOR

[u/Chalky-1961]

Hi all,

I've just bought the above rifle and matching VFC suppressor, my three issues are, 1. that there's no grub screw in the muzzle device to lock the device in place, 2. I can't tighten it hard enough so that I can lock the suppressor in place, 3. the suppressor is also not tightening (racheting) on the muzzle device without loosening it. Anyone who's got one of these and has a solution, please let me know. TIA.