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  #1  
Old 05-18-2019, 4:44 AM
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Default MP shield stuck set screw rear sights help

Urgent help. I bought a used shield that came tru Glo sights. I need to service the pistol and set screw is tight. I used a quality 1/16Ē hex key but it wonít move. I already try heating it with soldering Iron and nothing. Screw is not stripped. Just super tight! Anyone have a fix aside from drilling it out? Iím pretty sure there must be red loctite or something. Will freezing it work? Any idea what a gun smith would do? Is it cheaper to dremel it out and get a new $50í sight than pay $100 or more
For gunsmith?
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  #2  
Old 05-18-2019, 5:28 AM
XDJYo XDJYo is offline
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$100 gunsmith? Yikes!!! Thatís 1/3 the cost of the gun. I would try some PB Blaster and let it soak. Otherwise, Iíd try drilling out the screw. My M&P Sport had a difficult BB. Tried heat etc. wound up drilling it out.

Put the slide in a vice. A drill press is better. Mark the bit with the depth before you start. Go slow. You can always drill more. You canít un-drill.

Hope you get it done easily and quickly.
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Old 05-18-2019, 6:10 AM
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That set screw is probably pretty hard, a normal drill bit will have a tough time with it. If you heat by what ever method you like, put a penetrant on it when it's hot, it will be drawn into the threads as it cools. If it starts to round the fastener you might be able to use a torx bit as a second chance, the torx will have to be a tight fit. Sometimes a smack with a punch will break the bond of the threads before turning.
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Old 05-18-2019, 7:31 AM
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Thanks guys. I have a spare
Screw from the factory sights to use as a gauge. Probably cheaper than a gunsmith. Those guys charge heart surgery prices
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Old 05-18-2019, 8:07 AM
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Default MP shield stuck set screw rear sights help

I have had to use a butane torch to heat those screws up hotter when a soldering iron tip didnít have the heat to break stubborn red loctite free.

I would try that and some PB Blaster before drilling.
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Old 05-18-2019, 8:12 AM
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Try a reverse thread drill bit. Combo of heat from drilling and reverse direction might just back it right out
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Old 05-23-2019, 7:41 AM
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nothing.. still stuck.. should i pay the $25 to have it removed or should i drill it out.. how hard can it be?
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Old 05-23-2019, 8:00 AM
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The screw can be hard enough so the drill bit deflects off it and you end up drilling into the sight instead.
I used the soldering iron method on mine using a low heat pencil tip type to get in there.
I had to hold the iron on the screw a long time for it to heat up enough.
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Old 05-23-2019, 10:10 AM
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Use a blue wrench.
Oil smokes off at around 400F.
Loctite is broken down by 400F as well.
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Old 05-23-2019, 1:29 PM
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^^^ What is a blue wrench?

8 down, 14 to go.
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Old 05-23-2019, 2:19 PM
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Quote:
Originally Posted by sofbak View Post
^^^ What is a blue wrench?

8 down, 14 to go.
I am thinking.... torch (blue flame). Which is why Randall also listed temps.
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Old 05-23-2019, 3:36 PM
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Quote:
Originally Posted by MosinVirus View Post
I am thinking.... torch (blue flame). Which is why Randall also listed temps.


Correct. Why I mentioned my butane torch above. Works like a charm most times.
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Old 05-23-2019, 3:49 PM
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Quote:
Originally Posted by Mp5marley View Post
nothing.. still stuck.. should i pay the $25 to have it removed or should i drill it out.. how hard can it be?
Wait, your gonna risk your weapon to save $25 bucks?
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Old 05-23-2019, 5:43 PM
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Ended up giving up. Will just pay a
Smith or armorer. Who here takes a wheel to shop for air? I personally Pump at home.
It at home.
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Old 06-08-2019, 12:56 PM
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took it to two shops, 1st shop suggested pushing without relieving screws.. NO!
2nd shop, drill it out, $60
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Old 06-08-2019, 5:57 PM
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Quote:
Originally Posted by Mp5marley View Post
took it to two shops, 1st shop suggested pushing without relieving screws.. NO!
2nd shop, drill it out, $60
I charge $40 to get stuck screws out assuming there's not also a piece of tool steel stuck in the screw from a previous failed removal attempt.
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Old 06-08-2019, 10:07 PM
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take it to ar15,i would offer to help but i am down to 1 arm with a rotator cuff tear...those shields have been pesky for me too at times..
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Old 06-09-2019, 7:11 AM
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Dang. Van Nuys! $60 is literally 1/5 the price is the gun! Gonna keep poking around. I have a drill
Press but it doesn’t reverse. Thought about left hand drill bits.
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Old 06-09-2019, 8:34 AM
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Quote:
Originally Posted by Mp5marley View Post
Dang. Van Nuys! $60 is literally 1/5 the price is the gun! Gonna keep poking around. I have a drill
Press but it doesnít reverse. Thought about left hand drill bits.


Wait, all this time and you havenít used the drill press? Dude. Seriously. Thatís like the guy with a bottle of Hoppeís #9 and wonít use it on his barrel with copper fouling.

If youíre worried about it, start with the smallest bit youíve got and work up to it.
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  #20  
Old 06-09-2019, 2:53 PM
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Oh yeah. I got a press but my friends keep saying that i can drill hole thru but there’s still
Materials around it. The question is how to get it off. I future it would shred apart right?
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  #21  
Old 06-09-2019, 3:00 PM
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Damn small keypad. Hard to see
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  #22  
Old 06-09-2019, 3:57 PM
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Quote:
Originally Posted by Mp5marley View Post
nothing.. still stuck.. should i pay the $25 to have it removed or should i drill it out.. how hard can it be?
Famous last words before the cussing starts. Just pay $25 and be done with it, you might ask to watch the pro do it.
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  #23  
Old 06-09-2019, 4:43 PM
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It’s not $25. More like $60 or $40 in van nuys
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Old 06-09-2019, 9:54 PM
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Quote:
Originally Posted by Mp5marley View Post
I have a drill press but it doesnít reverse.
Thought about left hand drill bits.
Milling machines go both directions.
Left hand drill bits is how I usually do it.
The drill bit will grab the screw and pull it out under power with no damage to the surrounding threads.
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