AR-15 / AR-10 Parts

AR-15 / AR-10 Parts

Looking for the best AR platform parts on the Internet? You're here. Take a look and let's get to work. 

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
    Sig Sauer - MCX-SPEAR LT 16" AR CONVERSION KIT 5.56 NATO-BLACK (UAMCX­556N­16B­LT­BLK) Sig Sauer - MCX-SPEAR LT 16" AR CONVERSION KIT 5.56 NATO-BLACK (UAMCX­556N­16B­LT­BLK)

    Sig Sauer - MCX - SPEAR LT 16" AR Conversion Kit - 5.56 - BLACK

    Sig Sauer

    $1,999.99
    MCX-SPEAR LT 16" 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 16" 5.56 NATO upper...
    $1,999.99
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    TRIARC Systems - 16" SPR Track 2.0 Barrel KIT 5.56mm

    TRIARC Systems - 16" SPR Track 2.0 Barrel KIT 5.56mm

    TRIARC Systems

    $414.99
    These barrels are done in small batches and go through an extended QC process to ensure proper gassing and function. Introducing TRACK™ 2.0 barrels, exclusively from TRIARC Systems.  TRACK™ is a...
    $414.99
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    Daniel Defense 12.5" Government Profile 5.56 NATO Barrel w/ Low Pro Gas Block - Carbine-Length Gas, 07-077-07208, 815604011860

    Daniel Defense 12.5" Government Profile 5.56 NATO Barrel w/ Low Pro Gas Block - Carbine-Length Gas

    Daniel Defense

    $388.00
    Daniel Defense 12.5" Government Profile 5.56 NATO Barrel - Carbine-Length Gaswith Low Profile Gas Block When your AR-15 build demands elite performance in a compact form, the Daniel Defense 12.5"...
    $388.00
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    Aero Precision - EPC-9 Threaded 8.3" 9mm Complete Upper Receiver w/ ATLAS R-ONE 7.3" Handguard Aero Precision - EPC-9 Threaded 8.3" 9mm Complete Upper Receiver w/ ATLAS R-ONE 7.3" Handguard

    Aero Precision - EPC-9 Threaded 8.3" 9mm Complete Upper Receiver w/ ATLAS R-ONE 7.3" Handguard

    Aero Precision

    $331.99
    This EPC-9 Complete Upper Receiver comes standard with our ATLAS R-ONE Handguard. The R-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to...
    $331.99
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    07-077-10135

    Daniel Defense - 12.5" 5.56 Carbine - 1:7 - Gov Profile w/FSP

    Daniel Defense

    $374.00
    12.5" 5.56MM, CARBINE, 1:7, GOV FSP   SPECIFICATIONS Caliber 5.56mm NATO Barrel Length 12.5"
    $374.00
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    Daniel Defense - 16" 5.56 Mid-Length - 1:7 - Gov Profile (07-077-02114)

    Daniel Defense - 16" 5.56 Mid-Length - 1:7 - Gov Profile

    Daniel Defense

    $374.00
    Daniel Defense - 16" 5.56 Mid-Length - 1:7 - Gov Profile DD's 16” 5.56 barrel is the most accurate and longest lasting barrel attainable for your AR-15 build. They Cold Hammer Forge our barrels, a...
    $374.00
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    Daniel Defense - Rail Interface System III - RIS III - 13" FSP (FDE) (01-004-02383-011) Daniel Defense - Rail Interface System III - RIS III - 13" FSP (FDE) (01-004-02383-011)

    Daniel Defense - Rail Interface System III - RIS III - 13" FSP (FDE)

    Daniel Defense

    $486.00
    RAIL INTERFACE SYSTEM III, RIS III 13" FSP (FDE) The Daniel Defense RIS III Rail Interface System takes the proven design of our two-piece RIS II rails—used by U.S. Special Operations Command (SOCOM)...
    $486.00
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    Ergo 4850 M4 Forward Rail Picatinny for AR & M4 with A1/A2 Front Sight 4850 874748004442
Ergo 4850 M4 Forward Rail Picatinny for AR & M4 with A1/A2 Front Sight 4850 874748004442

    Ergo - Forward Rail Picatinny for AR & M4 with A1/A2 Front Sight

    ERGO Grips

    MSRP: $98.82
    $76.00
    ERGO - M4 Forward Rail Picatinny for AR & M4 with A1/A2 Front Sight Stand-alone rail system for AR/M4 weapons with a standard A1/A2 front sight base. Allows for attachment of Picatinny rail mounted...
    MSRP: $98.82
    $76.00
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    TNTE Custom - Billet C7/C8/M16E1 Upper Receiver with M4 Ramps-Stripped (UP-BLC7-SM4) TNTE Custom - Billet C7/C8/M16E1 Upper Receiver with M4 Ramps-Stripped (UP-BLC7-SM4)

    TNTE Custom - Billet C7/C8/M16E1 Upper Receiver with M4 Ramps-Stripped

    TNTE

    $149.00
    TNTE Billet C7/C8/M16E1 Upper Receiver with M4 Ramps-Stripped - UP-BLC7-SM4  Upper receiver comes stripped without ejection port cover, forward assist or rear sight. Billet from 7075 aluminum that...
    $149.00
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    Daniel Defense - 11.5" Gov Profile - Carbine Length w/ Lo-Pro Gas block (07-077-07108)

    Daniel Defense - 11.5" Gov Profile - Carbine Length w/ Lo-Pro Gas block

    Daniel Defense

    $396.00
    DD - 11.5" 5.56MM, CARBINE, 1:7, GOV Barrel w/ LPG Our 11.5” 5.56 barrel is the most accurate and longest lasting barrel attainable for your AR-15 build.  We Cold Hammer Forge our barrels from 4150...
    $396.00
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    Sons of Liberty Gun Works NOX9 5.56 Neutral Configuration Xeno Mount - Bronze

    Sons of Liberty Gun Works NOX9 5.56 Neutral Configuration Xeno Mount - Bronze

    Sons Of Liberty Gun Works

    MSRP: $130.00
    $125.00
    Sons Of Liberty Gun Works NOX9 5.56 Flash Hider Xeno Mount Bronze Introducing the SOLGW Xeno NOX, a versatile muzzle device that truly excels when combined with a Xeno Adapter equipped suppressor...
    MSRP: $130.00
    $125.00
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    $125.00
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    Sig Sauer - Folding Visor Stock - MCX/MPX - 1913 Interface - Black (STOCK-X-FOLD- VISOR-BLK)

    Sig Sauer - Folding Visor Stock - MCX/MPX - 1913 Interface - Black

    Sig Sauer

    $199.99
    Sig Sauer - Folding MCX/MPX Visor Stock SIG SAUER factory replacement folding visor stock installs easily on your MCX/MPX via the receivers 1913 interface. CAUTION: Many States and localities...
    $199.99
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