Though I wouldn't specifically choose the M4 for bear protection personally, I'm quite convinced it will do the job as long as you plan on skewering the beast with at least half the slugs in your magazine
And to all you "mall ninjas" out there saying "empty half a clip into it" well I can already see you have probably never been in the woods nor have you been charged by a Black Bear or a Grizzly. If you had, you would not even dream of saying that crap.
Let me get this right, Freedom Fighter, you are calling me a "Mall Ninja"?
For the record, I live in Western North Carolina. Anyone familiar with the area will tell you that this essentially means I
live in the woods/mountains.
I have indeed seen many black bear, about as many as I've seen deer. Anyone who hikes the fine trails we have here in the Appalachians is bound to see a bear eventually.
Several live on the mountain community my in-laws reside and this in Hendersonville, NC (fairly urban for WNC). There is very little conflict between human and bears here; folks here live in nearly perfect harmony with the bear native to WNC. The most common issue involving bear here in Henderson County are bears getting into trash and folks being cited for feeding them (as some apparently do).
In both Cherokee and in Swannanoa I had the opportunity to see black bear "charge" when they were chased from their food source. In both cases, the employees were able to stand the charge and prevail in chasing these bear off. The weapon of choice to confront these bear? A broom and trash can lid in one case and simply stern words in the other.
So indeed I live,work and play in the woods. I have also not only seen plenty of (black) bear, but twice I have seen them charge. As my first post indicated, I believe the .223 obviously a lousy choice if chosen specifically for bear. However, if an M4 is all you have in your hands while investigating some bump in the night and a bear happens to see you as the food source, I suggest that it be fired more than once. How does this philosophy make me a "mall ninja"?