Thread: Suppressed AR15 Rigle Lenght "Over gas" problem?

Hello everyone, hope most of you here already had a go in this beginning of roar.

A little advise needed. I suppressed my AR, now I feel it start to get a bit "cranck" in the buffer area as I fire it.
I read and follow a thread in here and the "normal" suggestion at the time was to go for a adjustable gas block, however, the rifles in question was carbine or shorter Lenght then.
My rifle is a Stag Arms model 6 "chopped" down from 24" to 18" on a AIL "A" cat stock(soon to be changed) and it has a MAE .223 compact suppressor.

My questions are:
Do I need to go for a adjustable gas block?
A heavier buffer or "stronger" spring will "help"?

Please, some helping advise will be appreciated.

Thank you a lot in advance.

Mac