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AR15.COM
3/31/2025 12:56:45 PM EDT
I am looking at a Springfield Champion 9mm and wondering what these keys are for?

Thanks

I was once asked to explain the concept of entropy....I thought about it and said: "You can't unscramble an egg...." 77Bronc, 1981
3/31/2025 1:20:17 PM EDT
[#1]
ILS Safety in the mainspring housing.
3/31/2025 1:20:18 PM EDT
[Last Edit: Nopetrol][Edited] [#2]
Disregard.  I'm way off base lol
Something clever belongs here.
3/31/2025 3:08:03 PM EDT
[#3]
Quote History
Originally Posted By SSeric02:
ILS Safety in the mainspring housing.
View Quote


I had a suspicion that is what it was for, do they all have that? Or just highly restrictive state samples?
I was once asked to explain the concept of entropy....I thought about it and said: "You can't unscramble an egg...." 77Bronc, 1981
3/31/2025 3:15:55 PM EDT
[#4]
Quote History
Originally Posted By 77Bronc:
do they all have that? Or just highly restrictive state samples?
View Quote
Idk the answer, but it may depend on when it was made. I worked in gun shops back in 2010 and SA had rolled them out on basically every model. My state has no such restrictions, but they were everywhere. Guys were griping about them all over this forum. Swapping for a non-ILS MSH (and associated parts) was super common back then.
3/31/2025 6:22:07 PM EDT
[#5]
I think at this point they're just ln the CA compliant models, but there could be others. Fairly easy to swap out the lock parts.
3/31/2025 6:33:02 PM EDT
[#6]
One looks like the RCBS 2 grain check weight.
America is at that awkward stage, it’s too late to work within the system, but too early to shoot the bastards....Claire Wolfe
3/31/2025 7:04:57 PM EDT
[#7]
As you already have the answer, I will add that the bottom right corner L-shape wire is used for ILS main spring housing removal. The ILS does not have internals capture pin (incerted from the back of MSH on standard guns). Instead, for full disassembly you will cock the gun and incert that tool in the retainer hole from outside. Then, lower the hammer. Once you punch the MSH retainer out, this tool will have the "guts" captured just as standard pin will  do.
3/31/2025 7:20:00 PM EDT
[#8]
Quote History
Originally Posted By SSeric02:
I think at this point they're just ln the CA compliant models, but there could be others. Fairly easy to swap out the lock parts.
View Quote

I would suggest to replace the ILS MSH as a whole assembly. It is a cheap part. If you replace just the "guts", it would be possible to lock / self lock the hammer at the cocked position unless ILS locking cam is also removed (living large hole).
3/31/2025 7:28:50 PM EDT
[#9]
My circa-2020 Mil Spec 1911 doesn't have one.
4/5/2025 3:48:49 PM EDT
[#10]
Both of my Springfield 1911 had them very briefly, easy swap
4/17/2025 4:55:22 AM EDT
[#11]
As already stated, it's the ILS lock key for the mainspring housing.

Easy swap to go to a standard MSH or magwell MSH.
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