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Old 10-03-2004, 06:50 PM   #1
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What is the proper method to fix a loose rear sight?

I have a carbine with a milled rear sight that is slightly loose (side-to-side) in the receiver. How do I properly stake this in place to remove the play?

I have a steel punch set, do I neet to buy any fancy tools?
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Old 10-03-2004, 07:29 PM   #2
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gman552:

This is a very common problem - here are some options.

Use a spring-loaded staking tool that permits adjustment of the "punching" force on the tip. These aren't expensive, and save you from accidentally moving the punch out of position just as you're hitting it with the hammer. Set to minimum force, and punch the SIGHT metal, not the receiver.

An alternative that seems to work well is the semi-permanent Locktite. It has the advantages of not marring your receiver, and being removeable with solvent or force, which is handy if you don't position the sight properly the first time. This method works well if the sight is only slightly loose, and it still takes a bit of force to move it from side to side.

Of course, you could just use your punch set and a hammer. I would use something around 1/16" - 1/8". Remember - you want to punch the sight base, so metal flows into the little recess on the receiver dove-tail.

I sometimes combine gentle staking (to snug things up a bit), followed by Locktite to secure the sight in its final position.

I hope this helps.
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Old 10-03-2004, 09:18 PM   #3
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Excellent advice Plinker. If it was staked properly to begin with and isn't real loose, then you can simply use a good punch that fits and re-punch the original stakes (Should be front & back). If it comes out, then I recommend peening the bottom of the sight so it is larger at its base, then restake it. To properly peen the base, you should disassemble the sight so you don't damage it. restaking will probably do the trick, provided the alignment is good to begin with. Now is your chance to correct that if it isn't. If you choose to remove it, use a block of wood as your driver left to right (looking at the back) so you don't mar the sight.
 
Old 10-04-2004, 09:38 AM   #4
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Thanks for the advice!
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Old 10-04-2004, 10:40 AM   #5
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Try shaping a piece of wooden dowel, into a chisel type base and.. as Plinker indicated, just move the metal into the dovetail grooves. This way with the wooden dowel, there will be no marks left around the sight base. Being wood, you will need to hit the top of the dowel a little harder than one would need to, with a steel aparatus.
 
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