Posted: 9/24/2009 8:40:18 PM EDT
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Howdy yall,
I had an interesting experience today. I picked up some ammo, loaded my range bag, pulled out my Sig P220 Carry DA/SA from the case. Perform a safety check, send home the slide and begin to dry fire for function testing. I notice after about trigger pull three... The roll pin on the right side of the slide frame is "walking" out!!!  The roll pin "walked" out about 1/4 an inch and was loosely pushed back into place, via finger. Three more trigger pulls and...  it did it again... Warrantized of course.. but prior to contacting Sig for instruction, Anyone have any ideas?
Speedo. |
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How many rounds through the gun? I believe the roll pins on the older 2-piece carbon steel slide SIGs need to be replaced every 5,000 rounds or so. As they wear, their fit inside of the breech block is not as tight. If you wait too long to replace them they will begin doing exactly what yours was doing at the range, walking their way out.
You need to order a new set of roll pins. That's 2, and inner and an outer roll pin. You will also need a roll pin punch to punch out the old ones and punch in the new. I'm not sure what size punch you will need and I think there's a specific order to punching in the new pins. Hopefully someone else will be along to add this information. |
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I don't remember the sizes of punches needed, but you will put in the larger pin about 1/2 of the way. The opening can be in any direction. You will put the smaller pin's opening opposite of the larger pin's opening. Most people will have the openings at the 12 and 6 o'clock positions just for aesthetics. Drive the smaller pin in until it is flush with the larger pin, and then both pins will be driven in the rest of the way together. *** It has been so long since I have worked on a P series pistol with roll pins, I don't have access to my armorer's manual right now, and I can't recall if you need to depress the firing pin before starting the large roll pin in. ***
OK, got the manual out. A 1/8 inch roll pin punch is needed to remove the pins and install the new ones. One end of the pins will be chamfered, that end is inserted into the slide first. ***You will need to depress the firing pin slightly to allow the outer H D pin to pass it and hold it.*** You then start the inner H D pin and drive them in together until flush with the side of the slide. |
| Thanks for the feedback. Got the pin out and boy was I suprised. The pin was darn near sheared in the middle. Luckily the firing pin components were undamaged. But I'll be.. that was the first time I have seen that happen before. Contacted a local gunsmith and he fixed it up for me straight away. He told me the most likely cause was due to dry firing the pistol frequently. I'll plead guilty to that one, I like to work on my trigger squeeze. I'd rather pay seven bucks for a small part due to my own habits opposed to paying more for a defective weapon repair. Thanks again for the input guys. For all intensive purposes, this thread can be closed. |
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Quoted:
Thanks for the feedback. Got the pin out and boy was I suprised. The pin was darn near sheared in the middle. Luckily the firing pin components were undamaged. But I'll be.. that was the first time I have seen that happen before. Contacted a local gunsmith and he fixed it up for me straight away. He told me the most likely cause was due to dry firing the pistol frequently. I'll plead guilty to that one, I like to work on my trigger squeeze. I'd rather pay seven bucks for a small part due to my own habits opposed to paying more for a defective weapon repair. Thanks again for the input guys. For all intensive purposes, this thread can be closed. Get a snap cap. I have one for my P220. |
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At least you have the option to replace firing pin springs in yours. The newer ones are some kind of pin with teeth on them, and they damn near need a 1 ton press to get them out. My local gun smith told me if I ever needed it removed to just send it to SIG. He changed out a couple of fining pin springs for a police department once, and he said that he'll never try that again. The older pins like yours are simple by comparison.
DBAR |