The buffer spring is a relatively cheap part to replace if everything goes badly for you, and clipping a loop or so off of it isn't going to destroy your rifle. I've heard of people doing this more than once. I would most definitely try modifying a $15 buffer spring before I opened up the gas port on a much more expensive barrel.
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"If you carry a gun, people will call you paranoid. That's ridiculous. If I have a gun, what in the hell do I have to be paranoid for." - Clint Smith
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