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ar15

  1. B

    What specific barrel material is the saint edge barrel made from?

    I've called Springfield and can only get the answer that it is a cmv barrel steel...like most ar 15 barrels. I want to know specifically if the barrel is made from 4140 or 4150 steel and cant find an answer anywhere
  2. GRIMLOCK

    9mm AR Pistol build issues

    I am just finishing my 9mm AR Pistol build, and I have run into several issues: first was choosing a BCG and upper that were either Colt or Glock compatible; then choosing to use a dedicated 9mm lower, modify one to accept 9mm mags, or modify pmags to feed 9mm! Who has run into compatibility...
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