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Page AR-15 » AR Discussions
AR Sponsor: bravocompany
Posted: 10/24/2004 4:53:06 PM EDT
i just picked up and sp1 externally i know what the diferances are between them but what internally inside the reciever  ( cut out area??))and how does the bolt differ as well  thanks  jim
Page AR-15 » AR Discussions
AR Sponsor: bravocompany
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