It does work well. I find it best to set the retainer clip as close as possible the MFT v-groove as possible then slide the clip into place. The c-channel on the MFT 3 interferes with tightening of the thumb bolt. I try to get it where it is only 1/4-1/2 turn to tight.
The wings also work on the CMS.
The flip stops also fit the c-channel of the MFT 3.
Tom