Calling on AAC Ti-rant tri lug adapter Geniuses

I bought two AAC Ti-rant 45M cans for a steal. With the intention of running on my APC Pro 9mm or MP5 both with Trilugs.

I bought an AAC Ti-45 3 lug adapter and its not going on. It will fit over the trilug but will not compress and twist on. I know there is a lot of confusion surrounding this set up so.......

Any advice much appreciated.

PB

My TiRant 9 had the same issue on my Zenith Z-5RS. I was only able to get it to work by pressing and twisting hard. It works without issue on a couple of other rifles.

Thanks Bret but I tried it on my APC Pro as well. But could be the same.

PB