Friend brought over a single stack 1911 with the slide locked back. Asked if I would look at it and let him know what it needed to fix it. I tapped on the back of the slide several times with a wooden mallet and the slide finally closed. I pulled the slide open and it locked up again. Tap, tap, slide closes. Field stripped the slide.
Guesses as to what I found??

Broken recoil spring? Broken guide rod?

Or did he assemble it and somehow miss the link?

Otony

I'm thinking missing link, too...

I did a fast reload and locked up the gun by bending the ejector up and wedged the slide.

.

Out on a limb here. Piece of debris?

Otony

and cause a hitch in the gitalong, but never seen one lock up the gun completely. Yer sposed to change em every now and then, like yer underwear.

.

...

sounds like a primer got loose and gummed things up.

Rear of barrel bushing taper locked onto bulge just in front of the locking lugs.

...

See now… if you said the slide wouldn't go BACK, then I would have had the answer.

A SiGP220.

Hard to take the gun apart and fix it when the slide won't move. Getting the barrel out was about 3 hours work. When I finally got the slide off, I had to saw part of the muzzle off to get the barrel to tip enough to to come free. Man I did all manner of horrible awful things to that gun to get it apart.

How did that happen? Stuck bullet? Muzzle obstruction?