Fun Gun Reviews Presents: The XS AR Universal Armorers Block. A solid Block of Aluminum to secure your Upper Receiver either Mil-Spec or AR-10 rifles.
The XS Armorers Block for AR Platforms. This universal Upper Receiver Mount works with the Standard 5.56 or .308 Uppers. The price is $75.
XS Sights Website: AR Universal Armorers Block: https://www.xssights.com/Detail.aspx?PROD=1201229&CAT=9090
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Category: AR-15 Uploaded: 08/09/2016