Once the barrel is out, the magazine can be removed, and the slide-lock lever released. The slide then comes off to the front. The recoil spring and spring guide come out as well.
The magazine must be removed before the slide can come off.
Canon PowerShot G12, f/3.2 @ 10.78 mm, 1/60, ISO 500, No Flash
© Alan Lapp and Zina Deretsky