Nah, for whatever reason the tubes on the MR vader hilt are over sized and wont fit inside the webley. Not sure how or why that happened during development haha
Right now the only real MPP clone options for us Fett heads are:
1.) Parks Sabers MPP -- I believe these are now out of production and the engravings aren't the best, but still fairly easy to find if you keep an eye out
2.) Roman Props MPP -- Readily available and almost 100% spot on save for the incorrect hole size under the button section (and maybe the discoloration in the chrome around the holes if that bothers you) The hole size is probably not a big deal for most since its facing inward when carrying the blaster.
3.) Korbanth MPP 2.0 -- This is the least accurate of the three in terms of how its made. It lacks any engravings around the hole ports and it also unscrews in the middle because its meant for FX Saber builds. Though you might be able to hide the seam under the front scope mount since the flash only sticks out 120mm from the tip of the webley barrel. No idea what the holes under the button section look like as I've never seen one in person