Hey just discovered that you can buy ECM and a Quasi-Beagle probe now. They are one or the other. As in you cannot mount both on the same Mech. Not that you would want to...they are damn heavy and critical slot heavy,. the ECM weighs in at 6 tons, and the Beagle Probe is like 5.5 tons. I have encountered them in multiple shops in the CC, FS, and oddly enough the MoC.