New pins on Sigs?

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TXHORNS

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I've been noticing brand new P220's with silver bands and black cases (not blue anymore) with what looks like the old style roll pins in the slide instead of solid pins. At first I was excited thinking they were offering the stamped slides again but doesn't seem to be the case. Does anyone have more information on this? Maybe why they made the change? Good or bad?

I was thinking about picking up a newer P220 so now I'm curious.
 
It appears to me they started the switchover in mid 2010. Rolled pins are easier to get in and out, and they aren't as brittle as the cast, solid pins.
 
Roll pins are great items. And yes, they are generally for whatever reason much stronger than typical solid pins. (Less expensive too if I recall)

However they are not supposed to be reused if they are taken out, generally speaking. (Not that you are likely to take them out unless repairing something anyway.)
 
Interesting. Pretty small change but I hope it's well received. I personally like roll pins as I can change them easier. They wouldn't be a deal maker or breaker but given the choice why not?
 
I think I remember reading that the new roll pins are actually two-piece units. Supposedly stronger and easier to remove than the solid pins.
 
Roll pins are harder to install than solid pins, but have more 'spring' to them and can withstand side loads better as a result - they tend to bend rather than snap. I'm guessing that Sig switched from the roll pins to the solid pin to make assembly faster and switched back when they noticed that they were getting too many warranty/service claims due to snapped solid pins.

Back to the future! :)
 
Roll pins are harder to install than solid pins
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Really? I always thought it was opposite. I've done roll pins before but never the solid pins as I've read you often need a press to get those buggers out. Maybe I was mislead on that.

Either way I hope Sig keeps going backwards in their design :)

Happy 4th!
 
TXHORNS said:
Really? I always thought it was opposite. I've done roll pins before but never the solid pins as I've read you often need a press to get those buggers out. Maybe I was mislead on that.
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Roll pins are harder to install in Sigs than the solid pin.

The solid pin just taps in with a punch and hammer.

The roll pins need to first be aligned 180 degrees off from each other. If you insert one and try to tap the other one in, inside of it, you'll likely tap out the already inserted pin. They need to be aligned and inserted together before being tapped in.

I have heard that the roll pins will take more abuse before failure and they usually don't both fail at the same time
 
I have heard that the roll pins will take more abuse before failure and they usually don't both fail at the same time
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True. The M249 SAW and a couple others out there have double roll pins. It is very strong. All the years of fixing that weapon and all the problems I've seen, the roll pins doubled up have never ever failed that I have seen. However yes as you mentioned they can be a turkey to install.
 
Just as a point of interest. SIG used a kind of single spiral pin for a while. They must not have worked out because they weren't around for very long.
 
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