https://midstatefirearms.com/product/16-4150-chrome-moly-308-ar10-lr-308-dpms-barrels/
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Superior Quality Dpms Pattern Barrels made in USA
4150 Chrome Moly Steel
1:10 Twist
5/8-24 Threads
16″
These are ok for armalite and dpms, 308 and 7.62×51. Will fit armalite uppers but it is recommended to use dpms bolt face.