Quote History Quoted:
Buying the right parts for the job would save you trouble of engineering a never been tested fix to adapt a carbine buffer and spring that's too short.
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That statement is not true. http://www.brownells.com/rifle-parts/receiver-parts/buffer-tube-parts/buffer-tube-hardware/ar-15-m16-buffer-spacer-prod44889.aspx
I've been going back and forth on two different threads about the same subject. Once you put a spacer in a rifle buffer tube, the tube becomes the same length as a carbine buffer tube and you use a carbine buffer and spring. Your rifle has no idea what stock you're using. I would suggest that people only do what they're comfortable with. Once again, there is nothing wrong with using a carbine buffer and spring in a rifle buffer tube as long as you use the correct size spacer.