85MikeTPI
Ultimate Member
What could be bad about a .40 cal? I have 2 9mm ARs and I am building one in .45 ACP. The 9mm's are tremendous fun to shoot and tack drivers out to 50yds or better.
Check out https://moriartiarmaments.com/ar-40-.40-sw/
Do you have experience with Moriarti ?
I see they have a 357sig AR-15 PCC that would interest me.