[span style='font-size: 12pt;']I might have found the solution. Need someone to confirm. This might make a good sticky (if correct) or part of a large FAQ on Galils.
I am assuming from the photo I need to have some white or 'sky' around the front site while looking thru the rear sight (hope that makes sense). Also, i am on 300 (not 500). Am taking to range today to test.
From wikipedia for a hk mp5:
Sight picture through iron sights of an H&K MP5 submachine gun. The annular shroud around the front post sight is aligned with the rear peep sight to ensure the weapon is properly trained.
I'll have a try at explaining it. Sights of this type are often referd to as diopter sights.
1.Look at the above photo on the left.
2.Notice that the rear sight produces a circle.
3.Notice that the front sight protector produces a circle.
4.You need to align the front sight protector circle in the center of your rear sight circle.
5.Ther needs to be a circle of light between the outside edge of your front sight protector circle and the inside edge of your rear sight circle.
6.The white light between the two circles,(often refered to as the Halo of light),will shrink or enlarge as you change your eye relief.
7..Eye relief?–– The distance between your eyeball and the rear sight.
8.How big or small does the halo of light need to be?–– The bigger the halo of light the less accurate the shot will be. The smaller the halo of light is the more accurate the shot will be.
9.Once the circles are aligned you keep them that way and place the front sight post center mass of you target.
The sighting system takes advantage of the eyes natural ability to align concentric circles. That's straight from HK, sorry. If you want to test it out try this. Take piece of note book paper and a object that will make a good circle,(coffee can lid is good). Trace the circle then free hand draw a circle inside the traced one. You will find that your circles are in decent alignment with a fairly even halo of light. Now do the same thing but attempt to make a circle inside the traced one that does not align and has an unequal halo of light. You find that doing so requires more effort and slows you down alot more.
In the photos above the left picture is very close to having alignment, but notice that the halo of light is not even. The halo is larger at the lower right. If the shooter placed the front post center mass of the target with that alignment and shot the round would strike high and left.
All this being said you can disreguard the front sight circle and simply put the front sight post in the center of the rear circle,( like you have to with a standard AR15). The problem is that your triing to center that small post in the middle of the rear ring. Keep in mind that really good sight alignment won't mean much to most shooters as you can align you sights poorly at 50-100 yards and still get OK hits on a target. Dioptor sights and their proper use are a great improvement over other sighting methods(not counting optics of course).but really only come into play at greater distances or when shooting at small targets at closer ranges.
No problem at all. All of it, with exception of acual firing of course, can be easily practiced at home. Just clear that rifle out, lay down about 15 feet from a quarter sized target taped to a wall and practice aligning your sights as well as the rest of your marksmanship.
Be sure to double check that your rifle is unloaded and get all ammunition and magazines well away from you.