Yep, got that also. I like that I can fold it completely out of the way and only pull it out if I'm uncertain. Fact is, the level in my ears seems to work pretty dang good.
@Chasingpro - the Tango RM is a pic rail scope base mounted level.
RAIL MOUNTED ACCURACY - 2.0 The new, revised TANGO RM™ 2.0 ACCU/LEVEL™, is Flatline Ops' only picatinny rail mounted scope level, fitting all Mil Spec** rails. The new 2.0 is now 7075-T6 aerospace grade aluminum, for a stronger, longer lasting device for your rifle system. The 2.0 body has been...
flatlineops.com
You do need sufficient clearance between your tube/erector housing to use it.
This one from Flatline is very nice and I wanted one to put on my ZCO but sadly they do not make it in 36mm. This is tube mounted and folds out or on top of your scope and out of the way. And, if you want your level set to show..well, level...for some degree of cant that is your natural mount, then a tube level can accommodate this while a scope rail cannot. I don't do that but some like that kind of set up
SNIPER-X™ SERIES, THE NEXT LEVEL The all new Sniper-X™ Series ACCU/LEVEL™ is the latest of refreshed products in our level series, based on our original Sniper scope level. We have made improvements on this legendary, patented, longest running level. The new Sniper-X is now 100% manufactured...
flatlineops.com
Best of luck