Flat-top iron sights

[michael_aos]

umm, cuz on the AR platform elevation is thru the front sight.
standard or BUIS

Bzzzt. Wrong answer. Please check anything beyond A1.

Mike

[Ridge]

Bzzzt. Wrong answer. Please check anything beyond A1.

Mike

Its how my A3 works...

[michael_aos]

Its how my A3 works...

The beauty of the AR platform is that you can put A1 sights on it if you so desire.

Mike

[Ridge]

The beauty of the AR platform is that you can put A1 sights on it if you so desire.

Mike

This is the barrel I use:

http://tinyurl.com/3e5dow

[michael_aos]

here is one of many references to the difference between A1, A2, A3, A4.

Mike

[mightymouse]

Rock River Arms has one as well. But yes, most of them are based around A2 Windage/Elevation drums and are as finicky and troublesome as they come.

[michael_aos]

Rock River Arms has one as well. But yes, most of them are based around A2 Windage/Elevation drums and are as finicky and troublesome as they come.

Thanks. I hadn't seen that one.

So you'd recommend against ANY of the A2-style stand-alone rear sights?

I've got a set of Troy BUIS. I like them well-enough. I just thought a using a rear-sight with adjustable elevation might let me salvage this Hayes Research front-sight.

Mike

[Marlin]

You looking for something like this;

B.M.A.S. Flat-Top Fixed Rear SightThis AR15 type fixed Iron Sight offers the option of mounting optics further forward on the flat-top rail. The sight’s base is a heavy, black anodized aluminum block - other parts are steel. Windage and elevation adjustments are 1/2 M.o.A.
------------------------------

That's the one I got for My build, Thus far I have been real happy with it, and no problems.

[mightymouse]

Thanks. I hadn't seen that one.

So you'd recommend against ANY of the A2-style stand-alone rear sights?

I've got a set of Troy BUIS. I like them well-enough. I just thought a using a rear-sight with adjustable elevation might let me salvage this Hayes Research front-sight.

Mike

(not ranting at you, but) This is the problem when people see stuff and go 'ohh ahh' and jump on a bandwagon. ARFcommers are notorious about this. Ohh woww... lets all buy this... lets all say its cool cause we have to justify our purchase.... oh wow this really sucks... When Stoner developed the AR, there were certain criteria that had to be met and barrel to sight height was one of them (its a 300yd zero thing and long and involved). You might make a set of same plane sights, but if they don't conform to the original specification, the it leads to wailing and gnashing of teeth (as you've found out).

Having said that, the H&K sight system is good for a certain type of rifle, which the AR is not one of. There were reasons why the original AR had a elevation only front post and a windage only rear sight. Given ammo and ballistics advances in the 20+years, the decision was made to develope the A2 rear drum system to allow for longer shots with a given type of ammo. The problem with the A2 sight is that its inhereantly complex, can get crap in it and its easily knocked out of zero/tampered with.

Given the choice in a fixed, non folding rear, I'd take the cav arms rear any day:



If I had to choose a folding rear, I'd probably take the Troy Industries:



As far as making either of these work and preserve you HK style front post, I think you're SOL to be honest, since they're same plane BUT lower plane height. None of the flip up rears sights that I can find both Elv/Win adjustment. Sell of those HK sights and buy a set from Troy, Midwest or the company of your choice.

[michael_aos]

If you've got Troy Ind BUIS, stick with what you've got. Whats wrong with the HR front?

Sorry, I wasn't clear. I've got a set of Troy Ind BUIS on another rifle. So I'm familiar with them. I'd have to buy another set if I wanted them on this carbine as well.

As I stated in my initial post, the Hayes Research sights sit really, really low. Especially the rear sight. It's difficult to crane my neck down to the point I can see through them.

I'm a little fuzzy on the physics involved, but...

I'd like to replace the Hayes Research rear sight and retain the Hayes Research front sight. Since the Hayes Research rear-sight is adjustable for elevation and the Hayes Research front sight isn't, I think I'd like the replacement rear sight to be adjustable for elevation as well.

I'm not at all clear whether I'll have to raise the Hayes Research front sight to be compatible with a "normal" A2-style elevation-adjustable rear sight.

For grins, I stuck a LaRue rear BUIS (obviously not adjustable for elevation) on my receiver and it seemed to line up just fine with the Hays Research front sight. I haven't had a chance to check the zero though.

Mike