According to mpa website the chassis is 5.2 lbs. I was also using the front fore-end weight which they've got at 0.8 lbs. Putting it at 6 lbs, which is what my bathroom scale says.
That setup balanced well with a 20" CTR and suppressor.
The rear fore-end weight is included but not installed as I wasn't using it. That is another 0.8 lbs