My problem isn't that they provided this service to the local authorities.
My problem is that they thought that it would be a good idea to advertise that they provided this service.
What will their next bright idea be, with that kind of leadership?
I still say, so what. As
@Fiv3r pointed out, they really didn't do anything unethical and as others pointed out, the decision by the police department to destroy these guns are common practice. BM simply offered to support L.E. which makes sense because L.E. are some of their biggest customers.
As to your comments with regards to BM's leadership and decision to advertise this, it's my understanding that the police department were the one that advertised it on their Facebook page, not BM... If your problem wasn't that they cut up guns but with your incorrect understanding that BM advertised it, then you shouldn't have a problem being that BM did NOT advise it.
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There's a very popular forum I'm a member of called Bladeforums.com. As
@Fiv3r also pointed out, most there who buy knives and own several $200+ Benchmades and other knives gun guys could not care any less. I buy mostly mid level Spydercos, Kershaws, CRKTs, Cold Steel, etc. Like most in the gun community, I'd spend the extra hundreds to thousands that most knives guys spend on Benchmades and the like on more guns, ammo, gun accessories, training, etc, long, long, long, long before I'd spend it on a knife.
IMHO, most gun owners and knife people do not care or see an issue with it, and most of the gun nuts who do aren't really spending $200+ on a knife anyway. Don't assume that because it's a big deal on internet gun forums and to the hardcore gunners, that the most others share your outrage.