Anyone know what this is inside my slide?

[Krp7894]

Took my AMT Longslide to the range yesterday to shoot about 150 rounds through it. I shot around 100 rounds of aluminum case ammo (maybe shouldn’t have but with ammo being scarce it’s all I could buy). Came home and cleaned it and noticed this inside the slide. Almost looks like a weld spot. I’m pretty sure it wasn’t there before, I’ve had this gun about 4 months. Anyone know if it’s just poor QC when the gun was built 40 years ago or could it be the ammo? I’m hesitant to try and scrape it off.

FFAB1E17-A762-4ED9-A3B5-2483ACC55C60.jpeg

[georgeib]

Looks like they covered up a gouge in the slide with some solder.

[Krp7894]

Looks like they covered up a gouge in the slide with some solder.

Meaning AMT?

I don’t believe it affects function. The gun isn’t the best 1911 I’ve shot that’s for sure. I had two fail to ejects at the range although it was while using that awful aluminum case federal ammo.

[georgeib]

Meaning AMT?

I don’t believe it affects function. The gun isn’t the best 1911 I’ve shot that’s for sure. I had two fail to ejects at the range although it was while using that awful aluminum case federal ammo.

Yes, the manufacturer. I don't see that it would affect function either, but it could be argued that it has weakened the slide, I suppose. I don't think I'd be too pleased about it, personally, but it probably doesn't have any real practical downsides. Maybe someone who knows a bit more can chime in.

[PriseDeFer]

What's to know? Looks bad, covering up something. Demand replacement.

[Krp7894]

Can’t really do that for a 41 year old gun

[Gunfixr]

It's just a casting imperfection.

[Krp7894]

It's just a casting imperfection.

If that’s all it is then I have 0 issues with it. So long as it doesn’t create an issue down the road I couldn’t care less. Can’t see it anyway. Thank you.

[gaijin]

It's just a casting imperfection.

This.

[Gunfixr]

Shouldn't be a problem. The higher area right next to the locking lug is where the barrel rides, as that spot's surface is lower, nothing even touches it.