1. Proof Research Barrel Blank 308 Caliber 1 in 10" Twist 5-Groove Carbon Fiber
    Proof Research Barrel Blank 308 Caliber 1 in 10" Twist 5-Groove Car...
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  2. Proof Research Barrel Blank 308 Caliber Medium Sporter 1 in 10" Twist 24" Stainless Steel
    Proof Research Barrel Blank 308 Caliber Medium Sporter 1 in 10" Twi...
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