I picked up Siege Megatron, and wanted to see about modding the blades to be removable. I figured something out, then checked online to see if anyone had done it yet, and sure enough, a few days ago someone on Reddit named BulljiveBots posted:
"Not sure if anyone here has done this quick mod. I separated the blade from the cannon of Siege Megatron’s sword which makes it so his tank mode’s turret can rotate and his cannon has tilt. The rifle by itself makes a great hand cannon as well. Removing one screw makes it happen."
(If you Google "Transformers Siege Megatron mods" you'll see the link.)
And the accompanying pics:
I took it further, though, and cut the shaft connecting the blades in half. Now they can peg into the 5mm ports:
I love this new flexibility, especially the blades' new utility.