Cetme Rear Sight Update--Problem Solved--Success

[hypotenuse1]

Thought I would just start a new thread here. As a reminder I was having trouble with my sights----The rear was welded off center hard to the left-----It was so bad the front sight would not compensate. After much thought I decided to remove the Cetme sight entirely and replace it with an H&K.

I realize there is a lot of opinions on this modification, but for me it was a simple case of practicality.
But I must say the overall look in my opinion is outstanding!

This is what is nice about the Cetme it requires tinkering and you can take it where you want to go with it------Awesome!

So here she is. I taped and screwed the H&K for a clean look and had the upper half of the gun parked. I’ve taken her out and shot her (only had 20 rounds so have to go back out soon). Made some small adjustments and I'm in the Black.

What an adventure. But I now have my gun running properly and I love it.
It’s all better than Good!

[hunter_la5]

Well done, glad you fixed your problem.

There's certainly nothing wrong with putting a G3 sight on your CETME, if that's what works for you. Hell, I considered it myself for a while, but ultimately decided to try to keep my rifle in original-ish configuration (insofar as a semi-auto CAI-built parts kit gun with 922r restrictions can be "original configuration", anyway).

The only thing that irritates me is when people insist that they need to replace the CETME paddle-wheel sight with an HK drum-sight because they "don't like the sight-picture of the CETME sight". :rolleyes: They're both diopter sights....

[MicroPilot]

How do you determine whether it's the rear sight or the front sight that is not aligned correctly?

How do you determine the line that the rear sight needs to be aligned with?

[jfowl31]

Looks like the screw in the "saddle" is going to keep any scope mount from attaching. It could be the camera angle though, but if its not completely flush or below flush with the bottom of the saddle it will hinder a scope mount.

If I remember right, having that saddle played a part in you deciding to go for it, so its something to consider tweaking if you can.

[hypotenuse1]

The only thing that irritates me is when people insist that they need to replace the CETME paddle-wheel sight with an HK drum-sight because they "don't like the sight-picture of the CETME sight". :rolleyes: They're both diopter sights....

You are absolutely correct there is virtually no difference between the paddle sight picture and the H&K-----both are open. I think part of the problem some folks have is that its open and not a peep; the other might have to do with the trigger pull and the relationship of the sight itself to the overall length of the butt stock, I’ve solved that by adding a butt pad to increase the distance.

I went with the H&K in case I did not get the mount right I could always adjust.:America:

[jfowl31]

You are absolutely correct there is virtually no difference between the paddle sight picture and the H&K-----both are open. I think part of the problem some folks have is that its open and not a peep; the other might have to do with the trigger pull and the relationship of the sight itself to the overall length of the butt stock, I’ve solved that by adding a butt pad to increase the distance.

I went with the H&K in case I did not get the mount right I could always adjust.:America:

Whaddya mean its not a peep sight?

[hypotenuse1]

Whaddya mean its not a peep sight?

I guess what I mean is the 100 meter is open at the rear not closed. Sorry if my terminology is incorrect. But you get the point.

[hypotenuse1]

Looks like the screw in the "saddle" is going to keep any scope mount from attaching. It could be the camera angle though, but if its not completely flush or below flush with the bottom of the saddle it will hinder a scope mount.

If I remember right, having that saddle played a part in you deciding to go for it, so its something to consider tweaking if you can.

Naaa—it’s actually not a problem for me I like running with iron sights. The only gun I’ve mounted something on is my AR, which has a red dot co-witnessed to my irons. I would only considering something else if I could not get my irons to work out.

[hansellhd]

Nice Job. I like the stain job on the stock as well.:rockon:

HDH.

[jfowl31]

I guess what I mean is the 100 meter is open at the rear not closed. Sorry if my terminology is incorrect. But you get the point.

Gotcha. What many of us do is sight it in for 100 on the 200 peep sight. I'm TERRIBLE with that V-notch, but fairly good with the peep.


Naaa—it’s actually not a problem for me I like running with iron sights. The only gun I’ve mounted something on is my AR, which has a red dot co-witnessed to my irons. I would only considering something else if I could not get my irons to work out.

Must have been someone else then.

[mitchstoner]

Looks good. I assume you loctited the screws?

[21HK]

Any reason why you didn't have the sight base welded? Just seems like a lot of work and not go all the way, especially if you did a refinish as well. If you decide on a claw mount, I would move the sight a little more forward to line up with the Receiver.

[slim]

Gotcha. What many of us do is sight it in for 100 on the 200 peep sight. I'm TERRIBLE with that V-notch, but fairly good with the peep.



WHOA! that`s brilliant...I`m bad with an open notch too. Now I don`t have to be. great idea

[SA80Dan]

After much thought I decided to remove the Cetme sight entirely and replace it with an H&K.


Good job....I did the same thing....and have never looked back.

[DMark]

.... I taped and screwed the H&K for a clean look....
That is a great looking setup. I want to do this with mine.

Could you provide more detail on how you did this (screw & tap size, number of screws, etc., etc.)

Thanks!

D. Mark

[bladeworks123]

How do you determine whether it's the rear sight or the front sight that is not aligned correctly?

How do you determine the line that the rear sight needs to be aligned with?


It can be both, and you have to do a combination of two measurements. 1. Checking the line between the two sights and seeing if they both set centered or on the same side of the line of the bore. 2. Checking to see if the front sight is plumb. If the front sight is plumb and the rear sight is to one side or the other, it is real easy to see. If the front sight and rear sight are on opposite sides of the line of the bore on the Cetme by as much as 1/16th of an inch, you will never have enough adjustment on the front sight by itself. If the rear sight is centered on the action, and the front sight is off by 1/8 inch, you also lose all your windage adjustment to the side it leans toward. As I recall on Hypo's rifle it was pretty obvious with the neked eye, that his rear sight was welded on to one side.

[bladeworks123]

The quick and dirty way to check if the rear sight is aligned on the receiver is to use a square with one leg held flat against the rail and measure to the center of the sight blade from both sides.

24172

Then measure the line at the front of the receiver the same way, to see if the front sight is of to one side or the other. A 1/6th of an inch at the front of the reciver will be a full 1/8 inch off at the front sight

24173

This picture is a centered rear sight blade and the front sight off by 1/8th inch. The sights were actually aligned, I just pushed the string line to the left by 1/8 of an inch to demonstrate the method, and how much 1/8 of an inch really is. It is pretty obvious to the naked eye when you use the string.

24174

Here's a link to a tutorial I tried to do on checking sights for alignment and cant.

http://www.militaryfirearm.com/Forum/showthread.php?t=16831&highlight=sight+string