Originally Posted by
jetfire
I have been part of three different units that have onboarded the M18. Every single unit has experienced a variety of problems with their guns, from fairly standard FTF due to heavy springs and light frangible training ammo, to more significant issues like out-of-battery detonation, rear sights flying off and causing issues, and some other fun stuff. There's been an ongoing back and forth between Sig and the Security Forces Center about the gun, but that's well above my pay grade.
What is an absolute, indisputable fact is that OSI, who was one of the driving forces behind us getting the M18 instead of the M17, ditched their M18s as soon as possible in favor of Glocks. So that's nice for them, I guess.