Sig experts - advice needed!

Cerdan

Cerdan

CGN frequent flyer
EE Expired
Rating - 100%
36   0   0
Location
Eastern Ontario
I broke the firing pin positioning pin in my old-style P220 (two-piece, stamped slide), you know, the old pins that had an "outer" pin and an "inner" pin.

Do you know if the new-style, knurled-on-one-end firing pin positioning pins would fit in an old-style slide?

Thanks!
 
I spoke to Mark at Questar, he said he may be able to order the parts I need (inner and outer firing pin positioning pins) as part of his next order.

Right now I'm just curious to know if the new- and old-style FPPPs are interchangeable.
 
Don't try to use the "new" pins as they are only for use with the stainless one piece slides. The knurled end is designed to "bite" into the steel and hold fast. If you remove one you will see the striations made by the pin. These will not work with the carbon slides and will damage them. You definetely need the old style inner and outer roll pins.
I was curious to know how many rounds you had through the 220 before the pin failed and whether you were ordering a complete "parts kit" from Mark? If you have to change the positioning pin it's probably a good time to change all the springs and maybe the firing pin as well if it shows wear. Just a thought.
Oh and remember to push the firing pin in slightly so that the pin clears the cut-out in the firing pin when you reassemble the slide. I have seen a lot of pins damaged when someone tries to drive the roll-pin through the firing pin.
 
Thanks kxc223, I figured they weren't interchangeable. Not sure of the round count, as it was bought used (it's old though -- P220 in 9mm).

It's a bit of a mystery what happened to it. I'm pretty sure it was broken before I drove it out (I've disassembled and reassembled quite a few Sigs btw). I started driving it out with a roll punch as usual. I was about 5mm in and I flipped the slide over and noticed it wasn't coming out the other end. I thought to myself "Where's it going if it isn't coming out the other side??". I was a bit puzzled but I had no other choice than to keep driving it out. When I finally went all the way through, the pin came out in three pieces: a long one in the middle, two smaller ones at each extremity.

I doubt being gently driven out could've broken a pin in two places, that's when I figured that it could've been broken a long time, the middle part doing its job with the firing pin, the two smaller pieces at the edge keeping the breech block inside the slide...
 
That's interesting, so do you think that it was just the outer pin that broke? Nice pistol by the way those 220 9mm's will last forever. There should be a date code on it though if you are interested in finding out how old it really is.
 
Huh, never realized that was a date code. I guess it's not as old as I thought, it's a '95.

Not sure what to think about the break. I imagine the outer pin broke before the inner, but the breaks are pretty clean. I'd have to send the remains to a forensic lab to get some real answers.;)
 
Use a roll pin if you can find one, they are stronger then the spilt pins.

Old two peice slides can only take split pins or roll pins

current one peice slides can only take "tapered solid" pins

Future one peice slides will take roll pins "Told to me by a sig instructor at Sig Arms"
 
Thanks John, I actually placed an order with them just yesterday; as of today it's still "on hold", not sure if it'll go through or not. Theoretically, if Brownells can't ship Sig parts to Canada because Sig isn't registered with the State Dept., neither should Numrich, but who knows eh?

At this point I've got three or four different leads goin', if they all pan out (which I doubt), I'll end up with lots of pins, enouh to last me two lifetimes, heh.
 
You must log in or register to reply here.
Back
Top Bottom