Brownells 19L Slide and Barrel kit questions

[Flamingo]

I recently picked up a Gen 4 G19 and I like the frame size, but I like the barrel length of the G17. Has anyone here tried out the Brownells G19L kit?

[jandbj]

Pieces parts in the classifieds section. Not mine, but I recall seeing them recently.
ETA: https://pistol-forum.com/showthread.php?31966-LoneWolf-G19L-barrel-and-adapter
99.44% certain that the Brownells and LoneWolf parts are both made by the same vendor.