Bob the newer ones are quite a bit lighter. I have field tested the ones like the grey in the video that I made myself. I couldn't do that with the black and blue prototypes that you see in the other videos as they were printed plasic and the printed plastic is pretty soft. It was good enough though to let me see that it performs like its meant to. The injected moulded ones I get a few weeks before I get the batch made, will be strength tested thourghly, and if any weaknesses found will be modified before the batch is made.