You can either make it out of wood or cardboard i like cardboard because it can be more detailed,though making a gun out of cardboard is mostly improvisation so there isnt really any specific way to make one becase you might make it hollow or you can glue a bunch of cutouts together.
Step 1: Things you need
a table saw or jig saw
a copper tube-should be about an inch longer that you want the barrel to be
help from an adult
a picture of the gun you are trying to make
a glue gun with glue stick cartridge things
paint-spraypaint and maybe some acrylic paint
thin cardboard-i used the cardboard from a cereal box
these are the basic things you need but ill mention some other things you can add and how i added them.
Step 2: First of all...
Make sure the lines are straight and that its scaled correctly.
If you want the clip to be detachable, don't draw it connected to the rest of the gun.
Here is my design drawn on the wood.
This isnt the same gun as in the other pictures.i was going to make this one but there was a knot in the wood and it would've cracked.
Step 3: Cut the wood
you're going to need to cut the wood on a tablesaw.
well this step is the shortest but actually cutting it takes a while.
If you are using the "layering" technique, just cut out a bunch of outlines of the basic shape of the gun and glue them all together.
Step 4: Add Details
For details of the gun that stick out slightly, simply cut them out of thinner cardboard and glue them on. You can do this whether you are making a gun out of cardboard or wood.