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Front sight slipping

SimonRL said:
How does a gunsmith go about doing that?

It sounds like the famous quote from race car designer Colin Chapman: Simplify, then add lightness.
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Lol, I will leave the racecar knowledge to you, never been a fan.


Quite often using brass rod and or just a small hammer the edges of the dovetail can be tightened unless it's way out of spec. Done it on many muzzleloaders I have worked on before

 
I sized a small piece of brass and fit it under my rear sight dovetail, tapping the sight in lightly with plastic mallet, hasn't moved in years. Copper flashing, or could flatten out a case on an anvil to get the right thickness, I think aluminum foil would probably fail after a short while, or tear trying to achieve a secure fit.
 
Sld1959 said:
Lol, I will leave the racecar knowledge to you, never been a fan.


Quite often using brass rod and or just a small hammer the edges of the dovetail can be tightened unless it's way out of spec. Done it on many muzzleloaders I have worked on before

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Thanks for the informative video. I’m a bit reluctant to take a hammer to the slide on a semi-auto fearing I’ll muck it up. But then I’m also reluctant to pay the gunsmith as much to lay his hammer to it as I might pay to just buy a new slide so…hammer sounds pretty good about now.
 
Turkeytail49 said:
Thanks for the informative video. I’m a bit reluctant to take a hammer to the slide on a semi-auto fearing I’ll muck it up. But then I’m also reluctant to pay the gunsmith as much to lay his hammer to it as I might pay to just buy a new slide so…hammer sounds pretty good about now.
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Have you thought about using a drop or two of blue loctite? It might be worth you time to try it. Just let it sit 24hrs before shooting it.
 
Addison3 said:
Have you thought about using a drop or two of blue loctite? It might be worth you time to try it. Just let it sit 24hrs before shooting it.
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Seems to be the simplest and most uninvasive possibility. If it works, great, if not I wouldn’t think it would impede moving on to plan B, C etc.
 
Turkeytail49 said:
Seems to be the simplest and most uninvasive possibility. If it works, great, if not I wouldn’t think it would impede moving on to plan B, C etc.
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Nothing to loose what so ever. I have a friend that would do that when changing out sights while pushing in a new one. Good luck in what ever fix you come up with.
 
I put a Leupold Deltapoint Pro on Sig P320 M18, which this particular pistol, plus red dot makes for a real challenge to come up with sites to co-witness easily. (Deltapoint Pro will be a challenge to find co-witness sites for most pistols). I found the tallest front site possible, using a rear site that mounts on the Delatpoint Pro itself and its still too short.

I filed the site's dovetail down to far trying to get a "reasonably" tight fit, and it was too loose. I used a blue loctite, gave it 24 hours to fully cure, and haven't had a problem. But to be honest, on this pistol the sites are just a back-up since they shoot high, I never go back to the iron sights on this pistol, and its only been a couple hundred rounds since gluing it into place with loctite, but it seems to have worked.

You want the area very clean before applying the loctite, i spray brake cleaner into the area to get any dirt and gun oil out of it, then apply the blue loctite.
 
RickAnderson said:
I put a Leupold Deltapoint Pro on Sig P320 M18, which this particular pistol, plus red dot makes for a real challenge to come up with sites to co-witness easily. (Deltapoint Pro will be a challenge to find co-witness sites for most pistols). I found the tallest front site possible, using a rear site that mounts on the Delatpoint Pro itself and its still too short.

I filed the site's dovetail down to far trying to get a "reasonably" tight fit, and it was too loose. I used a blue loctite, gave it 24 hours to fully cure, and haven't had a problem. But to be honest, on this pistol the sites are just a back-up since they shoot high, I never go back to the iron sights on this pistol, and its only been a couple hundred rounds since gluing it into place with loctite, but it seems to have worked.

You want the area very clean before applying the loctite, i spray brake cleaner into the area to get any dirt and gun oil out of it, then apply the blue loctite.
Click to expand...
Wow, Thanks for the pro tips! Although I love this 40 cal I likely won’t shoot more than a few hundred rounds a year so loctite seems like the logical first step. I know this sounds dumb, but would you apply the loctite to the dovetail and then push the sight into place, or apply it beside the sight after it’s aligned?
 
RickAnderson said:
I put a Leupold Deltapoint Pro on Sig P320 M18, which this particular pistol, plus red dot makes for a real challenge to come up with sites to co-witness easily. (Deltapoint Pro will be a challenge to find co-witness sites for most pistols). I found the tallest front site possible, using a rear site that mounts on the Delatpoint Pro itself and its still too short.

I filed the site's dovetail down to far trying to get a "reasonably" tight fit, and it was too loose. I used a blue loctite, gave it 24 hours to fully cure, and haven't had a problem. But to be honest, on this pistol the sites are just a back-up since they shoot high, I never go back to the iron sights on this pistol, and its only been a couple hundred rounds since gluing it into place with loctite, but it seems to have worked.

You want the area very clean before applying the loctite, i spray brake cleaner into the area to get any dirt and gun oil out of it, then apply the blue loctite.
Click to expand...
Best solution on an Sig with a DPP is a .400 front sight from Dawson Precision and the polymer rear sight from Galloway Precision. I have this on my M17 and X5 Legion. DPP probably sits the highest of any pistol red dot on the market.
 
Turkeytail49 said:
Wow, Thanks for the pro tips! Although I love this 40 cal I likely won’t shoot more than a few hundred rounds a year so loctite seems like the logical first step. I know this sounds dumb, but would you apply the loctite to the dovetail and then push the sight into place, or apply it beside the sight after it’s aligned?
Click to expand...
If the sight is off, I dip the lead edges in loctite and put a drop in the slide's dovetail. If you push the sight back a little you can put a drop in front of where it will move, so that it runs it over. Loctite is anaerobic, it hardens and adheres when it is cut off from oxygen. Its not very capillary, if you just drip it around edges, some may get into the edges, but not much and not likely enough to make a difference. You put it on before parts going together and it gets squeeze between the parts to harden and adhere.

SimonRL said:
Best solution on an Sig with a DPP is a .400 front sight from Dawson Precision and the polymer rear sight from Galloway Precision. I have this on my M17 and X5 Legion. DPP probably sits the highest of any pistol red dot on the market.
Click to expand...
I have a .420 height front sight from Ameriglo on my M18. The M18 has a shorter barrel and slide than the M17 and X5 Legion, so a shorter sight base.
 
RickAnderson said:
If the sight is off, I dip the lead edges in loctite and put a drop in the slide's dovetail. If you push the sight back a little you can put a drop in front of where it will move, so that it runs it over. Loctite is anaerobic, it hardens and adheres when it is cut off from oxygen. Its not very capillary, if you just drip it around edges, some may get into the edges, but not much and not likely enough to make a difference. You put it on before parts going together and it gets squeeze between the parts to harden and adhere.


I have a .420 height front sight from Ameriglo on my M18. The M18 has a shorter barrel and slide than the M17 and X5 Legion, so a shorter sight base.
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👍🏻
 
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