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Springfield Armory firing pin

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5.4K views 23 replies 11 participants last post by  Tackleberry 45  
#1 ·
G'day all had a problem at the range today with my new Ronin busted the firing pin I have been looking doing a bit of research and found 3 different diameters so I'm a little bit perplexed can somebody please tell me what the proper diameter is as I don't have the gun with me so cannot measure .

Cheers
 
#3 ·
Telephone:800-680-6866
Email:warranty@springfield-armory.com
Fax:309-944-3676
Address:Springfield Armory, 420 West Main Street, Geneseo Illinois 61254, Attn: Warranty Service

WHAT WILL SPRINGFIELD DO IF YOU DISCOVER A DEFECT?
If, during YOUR ownership of the Product, one or more parts of the Product fail due to defects in materials or workmanship, Springfield will provide, free of charge, a new, repaired or reconditioned (decided at our discretion) Product. That new, repaired or reconditioned Product will be warranted for the remainder of YOUR ownership of the Product under these terms and conditions.
 
#5 ·
...found 3 different diameters
From the EGW firing pin write up at Brownell's 1911 FIRING PIN


.068 normally fits Colt and Caspian 9mm/.38 Super/.40/10mm.

.075 fits Springfield Armory 9mm/.38 Super/10mm/current-production .45 ACP

.093 fits most .45 ACP, including older-production Springfield.
The .075 should be the size for your Springfield
 
#6 · (Edited)
My pistol is 9mm and the below information is for a 9mm Springfield.

I just tried to swap the Ti FP for a Ed Brown Springfield steel speced firing pin.

The Ed Brown is .072 diameter behind the end and will not fit my Garrison without turning it down a touch. My Factory Springfield FP is .062 in diameter. so a bit of work with a drill and emory paper or equivalent to get that exact fit.

Measure BEFORE you order. The Ti FP and weak factory FP spring gave me lite strikes usually 3 out of 9 or 10 rounds. I checked and all my primers are seated correctly. There was a bit of black grease in the FP channel as well I cleaned out. I replaced the stock FP spring with a Wolff xtra power FP spring and my pistol is firing all my 9mm loads now.

Good luck with this, I really like my Garrison blued 9mm and am putting in a Kart 38 Super barrel etc in this one. I also replaced the recoil spring which is 9# stock with a 12# Wolff recoil spring and it is functioning better now.

Firing pins are 10 to 12 dollars stateside for either 9mm or 45acp Springfield should replace this under warrenty by just sending you a new one. depending on where you are
 
#9 ·
Here ya go:

Yes, except those do NOT FIT current production SA 1911s. I have three of them on hand right now, just arrived yesterday from Midway, and no, they DO NOT FIT. It turns out I need the skinnier pins, too (RO, Garrison and Ronin). I'm going to send those back to Midway and get the .065" or turn them down. Haven't decided yet...........
 
#11 ·
Don't know we have not got it out yet and not sure how we're going to go about getting it out .
the front end of the pin is stuck in the firing pin hole around about 0.010" to 0.015" protrusion pin is broken somewhere behind that because the way I discovered I had a problem was misfires went back to the clubroom got out one of my pin punchs to take the firing pin out and could not push the firing pin far enough forward to remove the firing pin retainer whatever it's called figure I'll just tap on the firing pin until the front end pops out remove that retainer .
 
#14 ·
The round count on this pistol now is around 350 to 400 and the loads have not changed 125 hard cast coated 4.4g of American select starline brass Winchester brass and a fed 100 primer funny thing is when I was at the range yesterday it was only 10 degrees Celsius mainly been using the pistol in 20 degrees and so never bothered picking up the brass until I was finished I found 5 cookie cut pierced primers so my assumption is there is a lot of powder residue in the firing pin hole with a little bit of Cup material has Jamed the pin and somehow broken it the back of the firing pin moves in and out front of the firing pin frozen solid :mad:
 
#16 ·
So I went and picked up my slide took it home and actually did get it disassembled turns out the bit that was sitting proud of the slide face was not my firing pin it was actually a small piece of primer Cup material shaped like a primer Cup
Image


So it is going to get a good cleanup and reassembly I'll give it a go with some cci primers that I picked up today somehow I think the federals are just a little bit too thin for this particular firearm
Image
 
#20 ·
So it looks like a titanium firing pin will get tossed as soon as I can find one in my country that fits I won't hold my breath even if I had 9lives.😆

Now that maybe somebody can explain this to me the way I'm looking at it is a heavier firing pin makes perfect sense as it will have more inertia the heavier spring however won't that slow the fp down or does the hammer have enough Wak to override that and is the heavier spring just a little bit of safety margin in case the pistol is dropped .😱

Haha drail I don't type even a chicken can type faster than me using his beak I dictate to my tablet and then just have a very quick cursory inspection just to correct major spelling mistakes please tell me there are no spelling Nazis on this forum if so they'll have a full time job checking my workout 😉
 
#21 ·
It's all in the weight of the mainspring powering the hammer. Inertia is not a factor when intentionally firing the gun. But use an extra power firing pin spring from Wolff or ISMI because it will last longer and it will snap the pin back faster so it is withdrawn before the barrel starts to link down. The original steel G.I. pin has worked 100% for over a hundred years with a standard spring under it.
 
#24 ·
Yes they were my thoughts but I don't have the tools to ream the firing pin hole larger I do have access to a lathe and carbide cutters but all I'm worried about there is being a hardened steel firing pin will it be strong enough at 0.062" .
Brownells have a web sight here in Aussie but I think all I could find was 0.068 0.070 and 0.075