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Posted: 6/19/2012 3:45:27 PM EDT
| So my plan is to buy two items. A Colt LE6920 to start with and then a Daniel Defense MK18 URG. If I get the paperwork to build a SBR, can I switch uppers at will depending on which setup I want to use or would I have to keep one upper mated with one lower and get a separate lower for the SBR build? |
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