Sunday, November 23, 2014

AR-15 Barrel Basics, Part I

http://blog.cheaperthandirt.com/ar-15-barrel-basics-part/

 
#AR-15, #AR15, #AR-40, #AR40, #AR-45, #AR45, #AR-9, #AR9, #AR-16, #AR16, #M-16, #M16,

 

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