I recommend doing some research before using a titanium can on a semi-auto rifle that will be used for rapid fire, especially if you intend to shoot at night, more especially if with night vision. I also recommend reconsidering using a reflex can if the best rifle balance is your goal.
If you want my opinion based on my experience, read on.
Cans using titanium baffles wear out faster than other materials and also typically project sparks with every shot that are very visible in low light and very annoying with night vision. With rifle cans, wearing out is much more of an issue than it is for pistol or rimfire cans. Cans get louder as the baffle apertures erode to become larger and larger. I've seen an Ops Inc can made of all stainless steel that had extensive erosion, and was noticeably louder than a new can rated at 140dB, after only 10,000 rounds or so of use on a 12.5" 5.56 barrel.
Reflex cans are a compromise design that focuses specifically on shorter length, not better balance. Reflex can = shorter overall length but heavier than a conventional can of the same sound reduction, or shorter OAL but louder than a conventional can of the same weight. I've found that there's less difference in distributing some of the mass behind and in front of the muzzle than simply having a lighter can with all it's mass forward of the muzzle.
In short, for your purpose of the best balance possible on a semi-auto rifle, I recommend looking for a conventional can using the toughest material at the lightest weight possible that reduces sound to at least 140dB on a standard sound test. (I find I can't tell the difference in the sound of rifle cans until they get louder than about 143dB or so. Louder than that and they start to lose the pleasant "SNAP, hiss" and become more of a bark like a shotgun.)
IMO, the best can out right now for your balance requirement would be the new Energetic Arms "Vox" with the direct thread attachment and with the wipe removed.
https://www.esilencers.com/product/energetic-armament-vox-direct-thread/ Specifically, the direct thread method of attachment saves around 1/4 pound over the quick attach types, which has significant effect on balance that far forward. Total weight, about 12oz.
Another good choice (that you may find more available in the near term as the Vox can is brand new) would be the Silencerco Omega with 1/2"x28 direct thread attachment and an aftermarket titanium flat front cap from Howard Elliott Enterprises. Total weight, about 13oz.
Both of these cans also offer the option to switch to quick attach, at a weight penalty of around 5oz, should you decide to do so at a later date with the purchase of a QA adapter.
