I can't tell from the can opener unless they are side by side (and I've got an easier way then), but the shield is the same size the 91s and 84s, it is a nice fast way of scaling. And the 84mm scissors are profiled a little differently.
See:
They are rounded off on the part your thumb rides.
"Even if it is only the handful of people I meet on the street, or in my home, I can still protect them with this one sword" Kenshin Himura
Necessity is the mother of invention. If you're not ready, it's "a mother". If you are, it's "mom".
"I love democracy" Sheev Palpatine, upon his election to Chancellor.