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  1. HK NFA TALK
    Thought I would share this Unique SD. I've never seen anything like it before. Anyone care to explain how you can make an SD barrel/one piece gun? I'm just what it looks like underneath the rubber. http://img401.imageshack.us/img401/540/105ig.jpg http://img12.imageshack.us/img12/1334/104qj.jpg...
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