The model DB-15 is a 223 Remington/5.56 Nato. Barrel is 16 4140 Chrome-Moly, M4 Contour. Barrel rate is 1 in 9 twist. Lower receiver is made of forged 7075 T6 Aluminum. Upper receiver is a A3 flattop forged 7075 T6 aluminum. Stock is M4 commercial tube.Comes with no sights.
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