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Barrel Nut, New Factory Original (M400 Tread)Firearm Mfgr: SIG SAUER (SIGARMS)Firearm Model: M400Product #: 1904620$40.05
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Bolt Carrier Assembly, New Factory OriginalFirearm Mfgr: SIG SAUER (SIGARMS)Firearm Model: M400Product #: 1903770$215.30
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Out of stockButtstock Assembly Kit, New Factory Original (AR)Firearm Mfgr: SIG SAUER (SIGARMS)Firearm Model: M400Product #: 1904610$183.15
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Charging Handle Assembly, Ambidextrous, New Factory Original (M400 Tread)Firearm Mfgr: SIG SAUER (SIGARMS)Firearm Model: M400Product #: 1904630$92.90
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Compensator, 5.56mm, New Factory Original (M400 Tread; 1/2 x 28)Firearm Mfgr: SIG SAUER (SIGARMS)Firearm Model: M400Product #: 1904640$55.70
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Extractor Spring Insert, New Factory OriginalFirearm Mfgr: SIG SAUER (SIGARMS)Firearm Model: M400Product #: 1903570$10.25
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Extractor, New Factory OriginalFirearm Mfgr: SIG SAUER (SIGARMS)Firearm Model: M400Product #: 1903550A$33.65
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Fire Control Selector, Semi, New Factory OriginalFirearm Mfgr: SIG SAUER (SIGARMS)Firearm Model: M400Product #: 1903870$26.37
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Firing Pin Retaining Pin, New Factory OriginalFirearm Mfgr: SIG SAUER (SIGARMS)Firearm Model: M400Product #: 1903520$13.83
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Forward Assist Spring, New Factory OriginalFirearm Mfgr: SIG SAUER (SIGARMS)Firearm Model: M400Product #: 1903600$13.70
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Forward Grip Kit, Mlok, Black, New Factory Orig (M400 Tread; w/ Screws & Nuts)Firearm Mfgr: SIG SAUER (SIGARMS)Firearm Model: M400Product #: 1904650$57.70
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Front & Rear Sight Set, New Factory Original (M400 Tread)Firearm Mfgr: SIG SAUER (SIGARMS)Firearm Model: M400Product #: 1904690$176.00