Hasbro had a couple "reasons" (Or I like to call them excuses) for changing over to a more and more pliable plastic over the years.
One point they said it was due to how the plastic takes to the molds... Other excuses were the choking issues, and there were others if I recall correctly.
I for one laughed at the more pliable plastic taking to the molds, and it wasn't long after it was pointed out to them the level of detail and intricacy in weapons from Dragon and 21st Century toys, and detail in even smaller scale than 1:18, that Hasbro finally changed over to the "Well it's for choking concerns" excuse.
Dragon has a rigid plastic used on a machine gun for their troops, and I kid you not, the gun has a removeable clip and the BULLET at the top is painted it's proper brass color.
You have to see this gun in person to see the locking pin, the wire shoulder stock (collapsable on the real gun), and just to see this teeny, tiny, itsy, bitsy gun clip come out of the gun, and still even have paint detailing inside the clip.
It's a simple little thing, but when you see it (And you got this gun type for FREE when you bought one of the Dragon Action 18 $8 figures who had already come with a removeable belt, cloth camo poncho, and 3 extra rifles with grenades and landmines) you just will think how amazing things CAN be from Hasbro if they put their collective minds to work.
I don't expect Stormtroopers to have removeable clips on their guns, but a plastic that's not bent 90 degrees when I open the figure might be nice!