What kind of Irons with a 1-4x scope??? Co-Witness???

[FlyingKiwi]

I want a 1-4X close to mid range scope for my first build but cannot decide on the Iron Sights or the how to mount the scope. The scope would be primary but also want some serious Irons. This is a "dissipator" type build and the front sight is being mounted on the barrel close to the flash hider.

Is the only disadvantage with Flip up's durability or is there a difference in accuracy?

I cannot decide how to set it up:

#1 Raise the scope in order to get the front sight out of the Field Of View (FOV). With this config I figure I may as well have both Fixed Sights. (Give up a good cheek weld)

#2 Mount the scope directly to the flat top and have both sights flip up's. (give up durability of Iron sights, and accuracy???)

#3 Raise the scope slightly to have front sight 1/3 up FOV with fixed front sight and flip up rear. (Would this even work? Would the front sight "shadow" be in the way when at 4x???)


Any advice? #3 seems to be the best of both worlds. Any suggestions followed with recomended sights or mounts are appreciated.

 

[jmr40]

Just me, but I'd go quick detachable mounts on the scope and not try to co-witness.

 

[ugaarguy]

You'll need a flip up rear to keep it out of the way of the ocular lens. The front sight is far enough from the objective lens that a fixed unit will be fine. Even at 1x magnification, you'll focus past the front sight, and your brain will ignore it. At somewhere between 2x & 3x magnification the scope is focused past the front sight, and it becomes a non issue. If you find that the fixed front sight bothers you, replace it with a gas block with flip up sight, and toss the fixed unit in your parts bin for a future build.

Co-witnessing is typical used on non-magnified red dot sights with wide field of view.

 

[Limey46]

I agree with the last post. I have a Dissipator setup with a fixed front sight, a 1x-4x scope mounted on the flat top in QD rings, and a flip-up rear sight, and it all works very well together. Yes, at 1X you can see the front sight in the scope, but your eye/brain ignores it. And as explained above, co-witnessing isn't an issue. You zero the scope and the iron sights independently. I use the irons purely as backup, which is why the scope is in QD rings; if it fails, I can just ditch it, flip up the rear sight, and be back in business fast. My rear sight is plenty accurate and durable.