Well.. The other version with Hush Puppy Project has a Slide Lock and comes with a short Wipe silencer. I have seen a fair share of B&T cans and that might be the only left threaded in the US line that I’m aware.
I can confirm the barrel's threaded 13.5x1 metric. HK's and Sig both run this same thread pattern on their DA/SA guns. Almost every suppressor manufacturer I know makes a 13.5x1 piston.
I just got one nice shooter. I put a Glock performance trigger and FBI mag button in it. I took the ACRO off and B&T milled and modified the bottom. You can’t put a new ACRO on it. I wonder if you have to contact B&T if you have a problem with the dot. Would the milling void a warranty by Aimpoint ? Probably.
Contacted B&T yesterday and learned that the reason behind the left threads barrel is because they are imported. I remember seen a Forgotten Weapons RU-vid short talking about how this ACRO was also being milled for a lower fit. My guess is that warranty should be through B&T, but I never asked.
