SPRINCO AR-15 M4/M16 Enhanced Firing Pin Retaining Pin
8,50 €
Sprinco Enhanced AR-15 / M4 / M16 Firing Pin Retaining Pin – MIL-SPEC
The Sprinco Enhanced Firing Pin Retaining Pin is manufactured to MIL-W-13855 specifications, delivering exceptional reliability and extended service life under extreme operating conditions. Designed for professional and high-round-count use, this upgraded retaining pin significantly outperforms standard Mil-Spec components.
Constructed from ASTM A313 17-7 PH stainless steel, the pin is heat treated, stress relieved, passivated, moly plated, and cryogenically processed, resulting in a 3×–7× longer duty cycle compared to standard firing pin retaining pins. Precision tolerances ensure consistent fit and function in Mil-Spec bolt carrier groups.
An essential spare component for any AR-15 owner, armorer, or duty rifle setup.
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Key Features
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Replacement firing pin retaining pin for AR-15 / M4 / M16
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Manufactured to MIL-W-13855 standards
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ASTM A313 17-7 PH stainless steel construction
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Moly plated and cryogenically processed
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3×–7× extended service life over standard pins
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Heat treated, stress relieved, and passivated
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Designed for extreme duty cycles while maintaining performance specifications
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Precision-manufactured for reliable retention and durability
Compatibility
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Mil-Spec small-frame bolt carriers, including:
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5.56 NATO
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.300 AAC Blackout
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6.8 SPC
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6mm ARC
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6.5 Grendel
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Not Compatible With
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Large-frame bolt carriers
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.308 Win
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6.5 Creedmoor
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Other AR-10 / large-frame platforms
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Condition: New
Application: AR-15 / M4 / M16 bolt carrier groups
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