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Advanced blowback design
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Manufactured to function reliably with Glock .40 S&W, .357 Sig, and 10mm magazines
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Drop-in Installation
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8620 Steel Bolt
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QPQ Nitride treated for maximum durability and wear resistance.
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Heavy Duty Extractor
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Removable mass
15 oz assembled weight.
http://armorydynamics.com/Quarter-Circle-10-40-SW-Glock-Style-Bolt-Assembly_p_305.html
Armory Dynamics
3200 Caverns Road
Marianna, FL 32446
850-262-7920
www.facebook.com/armorydynamics