Size & Weight will be easy to quantify and I don't think there will be much confusion on how we look at each.
Here you will not find a sub-compact scoring really low because usually a sub-compact is going to score much better than a large handgun, but probably be lacking in firepower. Now, I will be judging each one in relation to each other. If a gun is small and light then bonus. If a handgun is small, but still kinda heavy, then it will score lower.
So if you take away anything from this, just remember that it can be a larger handgun, but score well if it's light. The purpose is to be able to judge and compare all of the guns in each class to all others.
Now this gun would not score well in this category.
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