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Discussion Starter · #1 ·
I wacked it pretty good several times with my nylon hammer and it won't budge. Am I going to have to heat it to get it off? Mini 30 straight barrel, 581 series, tri-lobe front sight, .651 or so barrel.
 

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Heres how I have got a few off with no more then 6 whacks and as little as 3 whacks with a hammer and hard wood block. Those sights are pressed on, some pressed pretty good.

I got small cheap styrofoam ice chest and poked a hole in the side a few inches off the bottom just big enough to get the barrel and front sight through. Put the barrel into the ice chest along with some dry ice, get the dry ice under, around and on top of the barrel/front sight. Leave it overnight. when you are ready pull the barrel/front sight out of the dry ice. I chucked mine in a vice with some wood blocks. Heat only the front sight with a small propane torch around ten seconds all around the sight. Take a block of hard wood and a hammer and knock it right off.

Reversing this will let you put a front sight back on pretty easy. Freeze the barrel and heat the sight. I have used the hot cold method for all kind of press fit applications.
 

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I wacked it pretty good several times with my nylon hammer and it won't budge. Am I going to have to heat it to get it off? Mini 30 straight barrel, 581 series, tri-lobe front sight, .651 or so barrel.
I have posted this at least twice in the past but will do again. Disassemble rifle completely. Tape up the front sight and barrel with blue 3M tape to prevent marrs and using appropriate size punch, hammer, and hardwood block drive roll pin out a few taps at a time. Remove tape. Saturate front sight/barrel overnight with PB Blast penetrating solvent. Use thick nylon vice pads and secure barrel in vice grip as close to sight as possible (barrel vertical with sight down if your vice allows). Heat sight with heat gun on high for 10-15 minutes. Take dry ice and wrap in towel and place on barrel right behind sight for 5 minutes. Take hardwood block place on top of sight and begin to drive off with hammer. Rinse and repeat. Remember the sight is a press fit and will require substantial force to remove in some cases.
 

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Discussion Starter · #4 ·
Already got the roll pin out. It came out fairly easy. I have no clue where to get dry ice. I have regular ice ice. I wonder if just heating the sight will work?
 

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Already got the roll pin out. It came out fairly easy. I have no clue where to get dry ice. I have regular ice ice. I wonder if just heating the sight will work?
You can probably get dry ice at most any of the bigger supermarkets, let your fingers do the looking and call around. They usually have a small freezer up in the front of the store.
 

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Dry ice: Try Baskin & Robbins ice cream shops. I remember they were selling it for Halloween parties. Maybe it is seasonal.
 

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Are you sure you hit it hard enough?

I wacked it pretty good several times with my nylon hammer and it won't budge. Am I going to have to heat it to get it off? Mini 30 straight barrel, 581 series, tri-lobe front sight, .651 or so barrel.
Assuming you had the barrel clamped solidly and smacked it like you were driving a big nail. Get a fresh hacksaw blade in the saw and start cutting parallel to the barrel even with the bore center line. Be careful and slow and before you finish your cut through to the barrel it will free up and tap it off. But the home cryo barrel conditioning does sound like it would work but the whole metallurgy thing , heating or freezing had me a little uneasy so I cut mine.
Let us know how it goes, are you going to shorten the barrel and crown it as well?
 

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Discussion Starter · #9 ·
I won't be cutting it down. I need to get the front sight off to send it off to have a slip on front brake custom fitted. I don't really want to send the whole gun off.
 

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I won't be cutting it down. I need to get the front sight off to send it off to have a slip on front brake custom fitted. I don't really want to send the whole gun off.
I sang the Michael Jackson lyric "Just beat it, just beat it" while knocking mine off and couldn't get it out of my head for weeks. "I've been working on the railroad" will also work.
 

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Not talking about cutting it down!

I won't be cutting it down. I need to get the front sight off to send it off to have a slip on front brake custom fitted. I don't really want to send the whole gun off.
I'm describing how to cut the front sight off easily without heating or freezing it! Reread my description.
 

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Discussion Starter · #14 ·
So glad I got one of these at Lowes. I used my old one completely up but it was a manual strike type.



If you don't have one of these little torches you should. I mostly use it on my old vehicle restore work and it really comes in handy for un-seizing things that have seized.

A couple minutes with the little torch, put an old tshirt under it, 4 or 5 wacks with the nylon hammer and it popped right off. There was a brownish looking residue under it. I don't know whether that was just rust or some form of loctite.

Should I consider cutting down my barrel and if so why? This is a straight barrel 581 series gun. I was just going to have a brake fitted for a slip on fit over my front sight although I have no need for the front sight. If the Mo company would make a no sight brake for the mini-30 in my size I would buy one.
 

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So glad I got one of these at Lowes. I used my old one completely up but it was a manual strike type.



If you don't have one of these little torches you should. I mostly use it on my old vehicle restore work and it really comes in handy for un-seizing things that have seized.

A couple minutes with the little torch, put an old tshirt under it, 4 or 5 wacks with the nylon hammer and it popped right off. There was a brownish looking residue under it. I don't know whether that was just rust or some form of loctite.

Should I consider cutting down my barrel and if so why? This is a straight barrel 581 series gun. I was just going to have a brake fitted for a slip on fit over my front sight although I have no need for the front sight.
Hottarod, if you have no need for the front sight I'll take it off your hands and pay shipping.
 

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Heat from a hair Dyer was enough for mine. I soaked it with PB Blaster for a couple hours, Then tried without heat - no joy. Then Just kept the blow dryer on high and moved it around the sight for 5-10 minutes. A few more good whacks and it started to move. Still took a while to get it off. It was really tight the whole way, but once it started to move the progress was steady. I was using a heavy hammer (probably 24 oz, but I'm not sure). The gun was in a vise, and I was striking the wood with sharp, solid blows. Not all out swings, but not too far from it.

The dry ice routine would probably make it a lot easier, but at least for me it was possible without it.

If you use a torch, be careful - too much heat here can be a bad thing.
 

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Discussion Starter · #17 ·
After doing much reading on my straight barrel maybe I should cut it down to 16 1/2. I have an 11 degree crowning tool so I can re-face it myself.

I did not have to put a lot of heat to the sight for it to come off. I didn't want to harm the bluing.
 

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I had a hell of a time getting mine off. I finally just filled a jar with PB Blaster and put the whole tip of the barrel in the jar, submerging the front sight for 36 hrs. After that the thing popped right off with just three firm hits with a wood block. It's not even worth trying to get the thing off until you have soaked it in my opinion.
 

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Discussion Starter · #19 ·
I presume all the guns have the blued steel front sight including the stainless which mine is. I noticed a brownish residue under the front sight all the way around the barrel. This could very well be a small coating of rust so the peanut butter, lol(what I call PBlaster) probably does help free it up.
 

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I had a hell of a time getting mine off. I finally just filled a jar with PB Blaster and put the whole tip of the barrel in the jar, submerging the front sight for 36 hrs. After that the thing popped right off with just three firm hits with a wood block. It's not even worth trying to get the thing off until you have soaked it in my opinion.
Good advice. The sight and barrel are dissimilar metals and hence the immediate advance of rust. Never mix carbon steel and stainless steel especially in a press fit. Guess Ruger does not have a metallurgist on staff.
 
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