Ouch. After 45+ years of living, have you never had a dog/cat/animal that you had considerable compassion on?
To get this thread back on topic:
Why do you want to cut a barrel instead of buying a shorter one? Can you not find a shorter barrel that meets whatever personal requirements you have? For me personally, AR's are too dang expensive to be cuttin' on'em like that....
I think I might have confused yall. I have a BCM M4 14.5 5.56 upper thats got 20 or less rounds thru it. I'm looking to turn it into a 10.5 5.56 length barrel upper. I'm happy with the upper, and i know I'd take a loss selling it and buying a new one with a shorter barrel so I figured I would just cut the barrel I have. I also want to keep it light and most of the short barrels are heavy profile.
Saying I'd trade it for a 300blk was lighthearted cause I don't know of anyone looking to trade one for a 5.56 upper.