It's more 2+2 builds than 4, but hey...

00:00 intro
01:41 ERMLas https://mwo.nav-alpha.com/mechlab?b=c...
08:27 MPLas https://mwo.nav-alpha.com/mechlab?b=2...
12:13 snubs https://mwo.nav-alpha.com/mechlab?b=6...
17:01 PPCs https://mwo.nav-alpha.com/mechlab?b=9...