if you shot nothing but full auto 30-round magazine dumps for 40,000 rounds, you'd still never "wear" extended feedramps, anodized or not. the odds of a round even touching them are probably one in a thousand. they're just a failsafe.
a homeschool M4 dremel job is one thing- if you possess the steady hands required, by all means. but for a manfer to do it is just silly and cheap as hell. thats my only complaint.

