My old one – a medium MX2 from 2006, now replaced with a Hemlock.
I reckon 30 pounds or so with XT cranks, Hope hubs on DT4.2 rims, Easton Havoc stem, Race Face DH bars, FSA seatpost, SDG Bel Air, Magura Louise FR brakes, Pana Rampage tyres, X& geary stuff.