sootch00 does a really good job here showing you the difference between different bolt carrier groups. I know that many of the better builders tend to stick with M16 bolts, and now thanks to sootch00, I understand why.
Bob Owens is the Editor of BearingArms.com.
Bob is a graduate of roughly 400 hours of professional firearms training classes, including square range and force-on force work with handguns and carbines. He is a past volunteer instructor with Project Appleseed. He most recently received his Vehicle Close Quarters Combat Instructor certification from Centrifuge Training, and is the author of the short e-book, So You Want to Own a Gun.
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