The 6-round cylinder flips out...
...and is removable.
My sister-in-law brought this over from China for me. It's a very awesomely terrific wooden Magnum 357 kit. It came as 2 sheets of 1/8" thick die-cut plywood. You pop all the pieces out and glue them together. There had to be over 100 pieces, and no instructions.
I feel like I'm fairly competent woodworker but this was a nightmare to put together. Each time I glued something together, I'd realize it didn't go there, or I should have glued another piece on first. If you need to un-glue some pieces of wood, you douse them with rubbing alcohol and the glue will melt.
She also got me another kit (you can see it in the 1st photo.) It says "BeiJing Quadrangle Courtyard House" and the kit is not just 2 plywood sheets like the gun; it is 7 sheets. Gulp! As much trouble as I had with the gun, I'm gonna need to do a lot of kungfu-style mental preparation before I attempt the courtyard house. It looks really fancy with lots of little doors and hallways, and columns and passages, and windows and steps, but who's gonna be putting all THAT together?! I guess 1 full sheet gets used as the base, so there are really only 6 sheets of plywood to worry about, BUT STILL!