need help

[prodromosdelta]

what would be a good laser boresight to buy for a colt m16a2 5.56x45 nato.
i have seen some yukon that look like a cartridge. i dont know anything about boresights . (i want to use it for scopes low and medium magnification and on red dots)

 

[rcmodel]

You really don't need a laser bore-sighter for an AR.
An AR is one of the easiest firearms ever made to just Bore-Sight the old fashioned way.

Take the top off and look through the barrel hole at a target 100 yards away.

You can cut v-notches in a cardboard box to hold the upper stationary while bore sighting & making sight adjustments.

Here is a close-range 10 meter bore-sight target you can use if you don't have 100 yards to play with.
http://www.eotech-inc.com/documents/M16A4-M4MWS_EOTech_LBS_Target.pdf

Look through the rifles bore and align it on the white spot, then adjust the sight to the yellow dot, and go shooting to finish sighting in.

(You'd still have to go shooting & finish sighting it in if you did it with a laser bore-sighter.)


rcmodel

 

[CB900F]

Prodro;

Laser boresighter's are just a fine way to separate money from your bank account. They are totally not needed for your application, just do it the old fashioned way & string it.

If you need to know how to string it, let me know & I'll go retrieve the process & paste it in here.

900f

 

[prodromosdelta]

To CB900F. PLEASE do , because not only i dont know , but i never heard it before.

To rcmodel. Thank you.

 

[CB900F]

Fella's;

I noticed on another thread that there was a lot of 'spread' in the discussion on how each individual bore sighted a bolt gun. Here's how I do it. The method is called "stringing".

You will need: Two plumb bobs, these are nothing more than a string with a weight on one end. One black, one white string works well. A paper plate with an approximate 1" black dot somewhere near the center. A method to attach the paper plate to a backstop about 25 yards away. A steady rest for your gun, that allows easy adjustments. And a stand to hang the rear string from.

Pull the bolt, sight down the barrel & move the gun till you can see the black dot on the paper plate through the bore. Hang the white string so it falls down the center of the buttpad. Use it to correct any cant of the rifle in it's rest. Hang the black string down the paper plate. Some like it bisecting the dot, others like it just to one side.

With the gun vertical, you can bring the scope adjustments to the dot and ensure that the vertical crosshair is parallel to the black string.
This method may be a little more complicated than others, but it's worth it in my opinion because it eliminates cant of either the gun or the scope as part of the equation.

Prodro, in your case, using the AR platform, there'll be no buttstock, you'll have the lower totally separated from the upper. It's still a very good idea to make sure as is practically possible that the upper not be canted to one side or the other.
900F