About 1/2 way through a mag today when my .45 jammed to the point of being totally inoperable. Spent round still in chamber, and when I dropped the mag to try and clear it I thought I noticed that the extractor was behind the round, not hooking the base of the round for extraction and ejection. Now I can only move the slide back just a few millimeters and the barrel won’t drop out of lock up and eject the round. Search here yielded nothing, nor did a YT video. I’m hoping I don’t need to send it back to Sig. This Carry upper doesn’t have but a few hundred rounds through it, but the fcg has a few thousand with my full sized slide and optic on it. I’m at a loss, any ideas guys? Thanks.

Try bracing the front of the slide, just below the front sight, on the edge of a table or similar and give a firm bump or push on the grip.

Tried numerous times, only moves a few mm’s rearward. Barrel won’t unlock from slide and drop down, stuck by empty case I suppose?

Success!!! Inserted mag, held slide firmly, slammed hand into grip, done!!! Link for those who may need help:
https://m.youtube.com/watch?v=...9uJ3QgZ28gYmFjayA%3D

IF it is a problem with an interference with the extractor-barrel- cartridge, you could remove the striker-extractor rod retaining plate and remove the extractor.

The slide is able to move rearward ~1/8" which enough clearance room for the retaining plate to be removed while depressing the exposed end of the extractor rod.

The video linked has the operator using live rounds for his demonstration which is a foolish idea.

A number of years ago a friend of my son had a jammed up 320. It had the fired case in the chamber, but locked up with no ejection.

I received the gun, was able to open the slide with higher force as described above.

With evaluation he was shooting steel case ammo, and his gun was dry as a desert bone, zero lube. I think the gun got zero attention since he bought it new.

His steel case ammo had the consistency of fine sandpaper, light roughness. That was a bad combination.

I field stripped then cleaned the gun, including a light lube job. When I gave the gun back I discussed my findings.