Thinking of replacing the rear roll pin with a solid pin.
- Thread starter BigKenNc
- Start date
A roll pin by design compresses as it's installed and the tension created keeps the pin in place. If you substitute a solid pin it would have to be a slighly larger diameter than the hole it's going into to create an interference fit so it doesn't fall out.
hobby-gunsmith
US Veteran
roll pin with solid pin
I wouldn't replace it. If the manufacturers designed it with a roll pin, I would leave it alone. The roll pins are designed to compress and expand and to hold and work that part.
Nick
I wouldn't replace it. If the manufacturers designed it with a roll pin, I would leave it alone. The roll pins are designed to compress and expand and to hold and work that part.
Nick
marlin.357
Member
Well, a roll pin squeezes down to make tight fit, a solid pin would have to depend on friction from the frame to keep it in place. Solid pins usually have a notch wihich engages a spring (or detent) to keep them in place.
Why do you want to replace the roll pin?
Why do you want to replace the roll pin?
I am looking at the roll pin that holds the sear block in place. If you look at the pin, it is not a traditional roll pin. A normal roll pin is C shaped and yes it is made to compress. The one in my gun, is like they took spring steel and rolled it into a coil of sorts. What concerns me is driving the pin in and out will deform the pin and maybe cause damage to the frame and or sear block. If it were a normal roll pin I wouldn't worry much. The second concern was if the pin is spring steel, I would not want it to rust. Since my original post I looked closer and it looks like the pin may be stainless after all. Thanks for the replies. J Rich, I have been gunsmithing for about 20 years and was looking to bounce an idea off other members. Please show a little respect like the other posters. Noone likes smartass comments like "Leave it alone".
~BK
~BK
Yeah, I have an early piece of "combat tupperware" that has solid pins, and the stinking things walk sideways under the stress of firing. Complaints about that led to the present pins, which stay put.
There was disrespect intended. Seeing you are a gunsmith of 20 years. Why are you not asking for other gunsmiths opinions instead of just out to the general population here?
You asked about a "Roll Pin" not some sort of coil spring. Not to be a smartass, but given your 20 years of smithing you should know the difference. Maybe a picture would help.
3hounds
No one likes a smartass, so knock it off before you get scolded.
Triggerman66
Member
I had trouble with the front spring pin on my MP45 moving to the left. Tried a new replacement from S&W but still had the problem. Then I put a drop or two of blue loctite on the pin and a little in the frame hole, problem solved. Just my 2 cents.
Geblynch
Member
I don't like the look of the spring pin so I filled the hole with DAP black silicone sealer. Problem solved.
bigggbbruce
Member
Deleted.. sorry just looked at the date.
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That's the only style of roll pin I've ever seen-- spring steel and rolled it into a coil. Never seen a 'C' shaped pin.
If you're concerned with deforming it, use a roll pin punch to drive it.
Whoops! Got me, too!
