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Posted: 6/24/2008 7:40:59 AM EDT
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What all would be involved in me trying to add a 9mm upper to my current 5.56mm lower. In other words, if I bought a complete 9mm upper, would it bolt right onto my 5.56 lower without any mods to the lower other than the mag adapter? |
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From the Rimfire & Pistol Caliber forum, tacked there...... 9mm Upper Faq mike ps - wonderful information around here when you locate the correct forum...... 
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