Material：100% Steel
Weight：10.3" = 386g 14.5" = 530g
Four specifications：
1. 10.3" with 14mm CCW Metric thread (Item NO.AR-BARREL-01)
2. 10.3" with 1/2-28UN Thread (Item NO.AR-BARREL-02)
3. 14.5" with 14mm CCW Metric thread (Item NO.AR-BARREL-03)
4. 14.5" with 1/2-28UN Thread (Item NO.AR-BARREL-04)
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