Christensen Arms fft sporter stock

[Gordonsetter]

Hi, thinking about buying this for my Remington 700. Can i use my original Remington bottom metal or do i need to buy the Christensen Arms bottom metal?

Is this a solid stock with no flex?

 

[srt-4_uk]

I use the Christensen bottom metal so not sure about the bottom metal fit. Mine is pretty solid though. I haven't noticed flex but the whole setup is under 8lbs (scope, full mag, suppressor) so it doesn't have a lot of leverage on it.