FNC Handguard Wobble

[Rally]

Finally dropped by the FFL to have a look at my FNC MG, I noticed the handguard has quite a bit of fore-aft slack. It had its barrel replaced so I’m wondering if maybe the gas block was a little too far forward. Does anyone have any tips on how to tighten it? I was thinking about some sort of shim between the gas block but I’m curious to see what others have done. I didn’t get to take it apart and see if there’s an adjustment screw like on the FALs (?).

 

[teutoborg]

I'd had an issue with some side to side wobble with the original hand guards on my fnc. A set of OEM hand guards largely fixed the problem, but it took some small shims between the hand guards and the hand guard ring/collar to get a firm fit. Your issue sounds different, but I hope this information is useful to you.

 

[paco]

There has always been some play on the system. The Belgian Army didn't bother it as it made a nice sound slapping on it on parades when you salute the flag...
Bending the collar or put some filler in it might help.
Paco