Can anyone tell me the pro’s and cons of each beside the whole one stays up the other isn’t?
I am leaning towards a non-flip up style mount given my FSB was shaved down to accommodate the VTAC tube.l
One stays up and one doesn’t… 
Seriously though I guess my thoughts would be that having the fixed sight means you have one less moving part on the rifle, and thus one less thing to worry about not functioning one day. However most fold ups I’ve seen are really sturdy. The other thing is for the fold ups you have a clear site picture when looking through an optic, whereas with the fixed you will have your front site post within the optic’s reticle. This seems to be something based on preference.
I for one like that mine is folded.
While those more knowledgeable than myself will soon weigh in, a big advantage to a fixed sight is durability. Speaking generally, the more components (especially moving) that you introduce into a system, the more potential failure points you have. However, I’ve not heard of a quality folding BUIS failing.
Also, if your primary optic does fail, you don’t have to take the extra time to flip up your front sight as, it is always “deployed.”
Some people don’t like having the front sight visible when looking through their optic, but this has never bothered me (I run a Daniel Defense fixed rear and the FSB out front). And under magnification, the front sight becomes less visible as the level of magnification increases; though I’d go with a folding front and rear if the rifle were going to be scoped full-time.
At the end of the day, much of this comes down to user preference, as both work.
Most folding front sights use set screws Vltor makes one that is pinned.
If it is a serious use carbine I would stay away from the set screws.
I prefer folding. Fixed sights get in the way of your field of view on lower powers. They make a blur in your scope on higher powers. You can shoot with them but I prefer an uncluttered view. I have never had an issue with flip up sights failing. Don’t worry about the screws backing out. Use lock tight and go forth. I have used folding sights for many years now with no issues.
Pat
BVickery,
What optic are you running?
I run a fixed front with my TR-24 and my T-1 and never notice them while shooting. The two rifles are LMT factory standard carbines 10.5 and 16inch. Less parts to break and less things to worry about. Plus it is way cheaper for me to leave something that works alone.
Still tossed between the XPS (trying to figure out the differences between the 2-0 etc and the 3-0 etc) or the H-1.
I like the ruggedness of a fixed and pinned front sight. With an Aimpoint I use a lower 1/3rd cowitness and with a low powered scope I use the LaRue 1.5" mount that keeps the FSB under the crosshair. If you use the 1" mount, it sits lower and will be in line with the reticle, get the 30MM mount and spacers if you run a 1" scope.
I’ve been playing with an eo-thingy on my S&W 22, since it was cheap and I wanted to keep it that way. I ran the non folding sights that came with it and felt like I was looking through a crack to see the dot. I switched to MBUS sights and it’s much better now. A riser would’ve done the same thing.
2-0 is visible light only and 3-0 has night vision settings (ie reticle only is visible if you are looking through NV device). Having shot a T-1 for a bit, a Comp M3 and a Comp M4 as well, the Aimpoints are super reliable battery friendly and all around great optics.
That said I have an XPS3-0 on a Larue riser. Primary reason, I always have had found it much faster shooting reaction side or in atypical shooting positions with EOTechs.
EOTechs are definitely not without their issues as well. My first EOTech (a 552 rev E) wouldn’t hold a zero for shit when I ran Carbine Operator at BW about 5 years ago. Kyle Defoor was one of the instructors and he was not a fan. When I saw he was running an EOTech XPS, I figured I would give it a try.
I am currently running the XPS3-0 on a M6A3 and so far so good. I’ll be taking some classes later this year which will likely push them much harder.
j