OK, forget about the correction format, I think we've been overdoing it a bit, this should be just right
I was talking about the SIG-540 series, the ones that
weren't in service in Switzerland but that were
license-built in Chile by FAMAE.
Definitely not the same as the 550 (Stg.90, right?), largely older design, so 1981 as IOC sounds about good to me.
I have heard no news about any SIG-550 in Chilean service anyhow (FYI the latest weapon considered seems to be the FN-2000, but nothing confirmed yet).
Is that right?