Anyone have any input or experience with a Tactical Innovations 22 upper assembly and 275 rd drum on an M16??

looking at getting one for when my M16 comes in (in a  year)
I see they are back ordered on the website.

I had looked into them.   There are some videos of them running and look like a fun set up.  Reviews are mixed and you really have to search to get information.  The gen2 is supposed to be more reliable.  I don’t like any upper set up that you have to change out the fire control group or use weaker hammer springs.

Do a lot of google searching on getting M16s to run with .22 kits or uppers.  It seems to be a crap shoot.
I have a 9 million series M16 roll marked Colt.   I am having very good luck using a CMMG dedicated barrel and bolt assembly with trip and weight kit.  I have a Geissele SSF trigger group with a Badass selector and Colt sear.
I seem to be one of the lucky ones that hasn’t had to do a lot of tinkering.

I also have a Freedom Ordnance FM-9 Belt fed upper that runs very well with my lower set up using amphibians 9mm buffer set up.

Hope the wait is not long for you.

what kind of links does the Freedom belt fed use?
any feeding issues?
is it finicky about ammo

FM-9 uses steel links.  Has been feeding good.  It’s the gen 1 version so doesn’t feed last two links.  Going to send it in to get the gen 2 conversion some time.  Have been using Win. white box and S&B 115 fmj