AR-15 / AR-10 Parts

AR-15 / AR-10 Parts

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We build AR platform rifles weekly for some very discerning customers. We only build with what we sell, and we only sell what works. Leverage our experience in building or upgrading your AR platform and buy with confidence. 

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  • Out of Stock
    TRIARC Systems - 13.9" TRACK  2.0 5.56 Nato Barrel Kit - Blue Spring TRIARC Systems - 13.9" TRACK 2.0 5.56 Nato Barrel Kit

    TRIARC Systems - 13.9" TRACK 2.0 5.56 Nato Barrel Kit - Blue Spring

    TRIARC Systems

    $339.00
    The TRIARC Systems TRACK 2.0 Rifle Barrel Kit features a 13.9" TRACK 2.0 Barrel that is optimized for the TRIARC Systems Mil-spec buffer tube, H1 Buffer and Sprinco Blue Buffer Spring. Also included is a Mil-Spec End Plate and Castle Nut. Together, these...
    $339.00
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    Sig Sauer - MCX - 9" upper Assembly - MCX LT Conversion Kit - Black (UAMCX-300B-9B-LT-BLK) Sig Sauer - MCX - 9" upper Assembly - MCX LT Conversion Kit - Black (UAMCX-300B-9B-LT-BLK)

    Sig Sauer - MCX-SPEAR LT 9" AR CONVERSION KIT - 300BLK - BLACK

    Sig Sauer

    MSRP: $1,999.99
    $1,949.00
    SIG MCX-SPEAR LT 9" AR CONVERSION KIT 300BLK-BLACK This complete kit will convert any MIL-SPEC AR-15/M4 Lower into the top-performing MCX-SPEAR LT. Included items: Complete 9" 300BLK upper assembly includes our removable 3-prong flash-hider ready to...
    MSRP: $1,999.99
    $1,949.00
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    TRIARC Systems - 12.5" 6.5 Grendel TRACK 2.0 Barrel - Mid Length

    TRIARC Systems - 12.5" 6.5 Grendel TRACK 2.0 Barrel - Mid Length

    TRIARC Systems

    $279.00
    TRIARC Systems TRACK™ 2.0 - 6.5 Grendel 12.5" Barrel Overview: Introducing the advanced TRACK™ 2.0 barrel by TRIARC Systems. The unique Single Edge Polygonal (SEP) rifling, exclusive to TRIARC, offers shooters the best of both standard and...
    $279.00
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    TRIARC Systems - 16" 6.5 Grendel TRACK 2.0 Barrel - Mid Length

    TRIARC Systems - 16" 6.5 Grendel TRACK 2.0 Barrel - Mid Length

    TRIARC Systems

    $279.00
    TRIARC Systems TRACK™ 2.0 - 6.5 Grendel 16" Barrel Overview: Introducing the advanced TRACK™ 2.0 barrel by TRIARC Systems. The unique Single Edge Polygonal (SEP) rifling, exclusive to TRIARC, offers shooters the best of both standard and...
    $279.00
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    11.5 AR CONVERSION KIT 5.56 NATO-BLACK 11.5 AR CONVERSION KIT 5.56 NATO-BLACK

    Sig Sauer - MCX-SPEAR LT 11.5 AR Conversion Kit 5.56 NATO - BLACK

    Sig Sauer

    MSRP: $1,999.99
    $1,949.00
    MCX-SPEAR LT 11.5 AR CONVERSION KIT 5.56 NATO-BLACK This complete kit will convert any MIL-SPEC AR-15/M4 Lower into the top-performing MCX-SPEAR LT. Included items: Complete 11.5" 5.56 NATO upper assembly includes our removable 3-prong flash-hider...
    MSRP: $1,999.99
    $1,949.00
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    Radian Weapons AX556 Billet Upper/Lower Receiver Set 10" Handguard - Black, R0427, 817093024109

    Radian Weapons AX556 Billet Upper/Lower Receiver Set 10" Handguard - Black

    Radian Weapons

    $1,254.95
    AX556 Billet Upper/Lower Receiver Set 10" Handguard - Black The Radian AX556 Billet Upper/Lower Set delivers unmatched quality, precision machining, and fully ambidextrous functionality, making it a top-tier foundation for a high-performance AR build...
    $1,254.95
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    Radian Weapons - AX556 Billet Upper/Lower Set 14" Handguard - Brown

    Radian Weapons - AX556 Billet Upper/Lower Set 14" Handguard - Brown

    Radian Weapons

    $1,294.95
    The design philosophy behind the Radian Model 1 is simple: use the highest quality raw materials, most precise CNC machining equipment, and best components available to create a weapon that seamlessly blends form and function. Beyond quality and...
    $1,294.95
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    TRIARC Systems 13.9” RECCE Complete Upper Receiver Right TRIARC Systems 13.9” RECCE Complete Upper Receiver Left

    TRIARC Systems 13.9” RECCE Complete Upper Receiver 5.56 – Black / Carbon Gray

    TRIARC Systems

    $1,126.00
    TRIARC Systems 13.9” RECCE Complete Upper Receiver, 5.56 – Black / Carbon Gray - Black (Anodized) Forged Upper Receiver- 13.9" TRACK 2.0 RECCE Profile Barrel, 5.56mm, 1:7 twist Barrel, 1/2×28 Muzzle Thread Pitch- 13" TRIARC Interlok...
    $1,126.00
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    Radian Weapons - AX556 A-DAC Lower Receiver - Radian Brown, R0389, 817093023737

    Radian Weapons - AX556 A-DAC Lower Receiver - Radian Brown

    Radian Weapons

    $514.95
    Radian Weapons - AX556 A-DAC Lower Receiver - Radian Brown Machined from billet 7075-T6 aluminum, the A-DAC 15 is a fully ambidextrous lower receiver for AR15-style firearms. In addition to the Talon Ambidextrous Safety Selector, left-side magazine...
    $514.95
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    Sig Sauer - MCX Deflector Assembly Forward Assist - Blk (KIT-MCX- DEFLECTOR-BLK)

    Sig Sauer - MCX Deflector Assembly Forward Assist - Blk

    Sig Sauer

    $49.99
    Sig Sauer - MCX Deflector Assembly Forward Assist - Black Factory replacement deflector assembly and forward assist in Black for the SIG MCX Installation of these parts kits require disassembly of your firearm beyond a “field-stripped”...
    $49.99
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    MCX/MPX MINIMALIST PLUS LOCKING FOLDING STOCK - MINIMALIST - BLACK MCX/MPX MINIMALIST PLUS LOCKING FOLDING STOCK - MINIMALIST - BLACK

    Sig Sauer - MCX/MPX Minimalist Plus Locking Folding Stock

    Sig Sauer

    MSRP: $249.99
    $224.99
    Sig Sauer - MCX/MPX Minimalist Plus Locking Folding Stock SIG SAUER factory aluminum locking minimalist plus, folding stock installs easily on your MCX/MPX via the receiver's 1913/Picatinny interface.
    MSRP: $249.99
    $224.99
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    Surefire - Spring Main Drive - OBC Replacement (SF-OBC-556-SPRING)

    Surefire - Spring Main Drive - OBC Replacement

    SureFire

    $25.00
    SureFire OBC Replacement Main Drive Spring This Main Drive Spring is a replacement or spare for the one that comes with the Surefire SF-OBC-556 Optimized Bolt Carrier Group for M4/M16/AR-Variant Rifles & Carbines. *Buffer pictured is not included.
    $25.00
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