the navy SPR or Mark 12

Discussion in 'Auto & Semi-Auto Discussion' started by Mack Bolan, Feb 15, 2010.

  1. Mack Bolan

    Mack Bolan New Member

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    the Navy issued SUR, the Mark12 or SPR in .223/5.56mm with an 18" barrel...

    searched for some info and experienced opinions on this rifle and couldn't find any posts on it here...seems like it would be a fun build project but is it really that different from any other AR fitted with an 18" barrel?