AAC 762-SDN-6 backing off mount (brand new)

[Poongee]

I recently purchased 4-AAC 762 SDN 6 supressors 3 for customers 1 for myself.

Today for the first time...(fired on semi-only)
I fired mine on an M14
A customer fired his on an AR-15

Both cans locked up tight, no slop.

BUT, both cans started to back off the 51t mounts after just a few rounds.

Is this normal? These are brand new cans and adapters

[BadKarmaZeroSix]

I have the SDN-6 and have used on .308, 300 Blk supers/subs, and 5.56...the 300Blks and 5.56s were semi-auto, never FA, but 200rds plus in a day, never had it back off...the bolt action .308 wasn't shot nearly as much suppressed, but no probs there either...

[Poongee]

On the plus side, I was impressed with how quiet they were shooting .308!

[NickAAC]

That's not normal, can you mount it, then spin it off without pressing the button?

[Poongee]

That's not normal, can you mount it, then spin it off without pressing the button?

No, its tight. Ive only fired it a few times. I plan on trying it again if it ever stops raining here!