Thank you to HankKCB from Thingiverse for this incredible Phalanx CIWS Close In Weapons System model https://www.thingiverse.com/thing:5791925 I simply took just the parts I liked, to make it simplified, and shrunk it down so a small screw and 1 bolt and nut maybe m5 or m4 depending on how small you make it, i made mine around 50% scale of the original, or 76mm. I removed all the other pieces so I just downloaded the base, arm, phalanx dome/gun part and the pin, although i used the bolta nd nut on my first print but the pin is probably easier. I also used 4 screws on the borttom and one small screw and optional washer thats really not needed, so the whole thing canturn and stay assembled better but thats not really necisary unless you want to use it like me as a toyin your pocket to carry around, so i didnt want it to break with the extra pieces.

if you do choose to add a small screw to the very bottom like I did, you could add four more, I know I know you could have four small 3d printed leg pieces, or use the thingiverse piece for the cover and use a larger recess hole, which i may add later, i just like the extra metal for the weight I guess.

YOU DO NOT NEED the screws or bolts, but you CAN use them to make the top not fall out of the base if kept in your pocket since it is so small etc etc.

(Not sure about Commercial, i just selected yes but check with original creator hankkcb ! )