Verteth;
Good evening to you sir, I'm trusting that this finds you doing acceptably well.
The choice of arm for "bear defense" is always a hotly debated one on any outdoor/firearm forum and as with many things in life, what might be right for you won't work for me.
In broad terms, saving money on any social arm is akin to purchasing the smallest and least expensive fire extinguisher we believe we just may need. Now if we're not going to say cut a lot of metal or weld near flammable material, then that inexpensive fire extinguisher might never bite us. If we do those activities and in our heart of hearts we know there could be a chance of a fire, then we should get what works.
For me then, when I'm putting together a "social arm" for myself, a family member or someone else, the first rule must be that it functions perfectly EVERY TIME. There really can be no exceptions, as we're going to be playing for all the marbles when it's hauled into use.
We need to practice with it enough that the motor controls are memorized and come without thought. I do speed drills on water or milk jugs at 20 meters and closer - as those who have had bear encounters that went sideways tell me that's the distance we'll be dealing with.
I've been fortunate thus far in that all the bears I've encountered in our yard and in the wild have been "good bears" and have left when asked to do so - well save one who I encountered when chasing elk and I was thus appropriately armed for the little discussion that ensued on that stretch of BC mountain.
If you're interested, here's a link to what I've just put together for the very thing you're asking about for our own daughter. If you're a father and you've ever done stuff like this for your own kids, you know too well the thought and consideration put into building something that may save their life someday if need be.....
Linky thing.
http://www.canadiangunnutz.com/foru...Scattergun-Builds-and-Discussion-Thread/page7
Now just today I did some work on a pistol gripped 870 for a bow hunting friend, who is comfortable with a pistol grip shotgun and his abilities with it. For him it's a viable tool.
When I did speed drills on the jugs with a pistol grip, I didn't hit what I felt I needed to, so that's not the way I choose to go personally - but that doesn't mean I'm right and he's wrong - we're both using what works for us.
In summary, spend as much as you need to in order to get an arm that is more reliable than a framing hammer, practice with it until use is second nature to you and then do like the rest of us who work and recreate and live in bear country - which is hope/pray it's never, ever needed.
Hopefully that made sense and was useful to you or someone this night before Valentine's Day.
Dwayne