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MAS Defense 4.5" Threaded Barrel - Glock 19
9MM - 9x19mm Chamber
416R Stainless Steel
Melonite Nitride Treated
Hardened to ~52RC
Stress Relieved
1:10 Twist Rate
Drop-In Fit GEN 1-4
Threaded 1/2x28
Product Code: MAS00701356
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