AR-15 Parts

AR-15 Parts

Shop our extensive inventory of AR-15 parts and modern sporting rifle (MSR) components. From fully assembled MIL-SPEC upper receivers and enhanced lower parts kits to free-float M-LOK handguards and ambidextrous controls, we carry the critical components required for duty, defense, and custom builds.

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  • Out of stock
    On Sale
    Forward Controls Design - Quad Rail 6.7" - RHF-6.7 - 680665827169 -  Boss Firearms - BossFirearms.com Forward Controls Design - Quad Rail 6.7" - RHF-6.7 - 680665827169 -  Boss Firearms - BossFirearms.com

    Forward Controls Design - Quad Rail 6.7" - #RHF-6.7

    Forward Controls Design, Inc

    Now: $166.25
    Was: $175.00
    RHF (Railed Handguard, Forward Controls) is based on the superb CMT UHPR Mod2, with full length 1913 rails at 12 o'clock, and MLOK at 3, 6, and 9 o'clock.   Since its introduction in 2018, RHF has progressively become more robust and durable with...
    Now: $166.25
    Was: $175.00
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    Now: $166.25
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  • Forward Controls Design - Low Snag Forward Assist Dimpled - LSFA-AA - 687408648616 - Boss Firearms - BossFirearms.com

    Forward Controls Design - Low Snag Forward Assist Dimpled - LSFA-AA

    Forward Controls Design, Inc

    MSRP: $48.00
    $45.60
    The Forward Controls Design Low Snag Forward Assist — Dimpled (LSFA-AA) is FCD's most minimalist forward assist design for AR-15/M16 upper receivers. The LSFA (Low Snag Forward Assist, Forward Controls) takes the low-drag concept further than the LDFA by...
    MSRP: $48.00
    $45.60
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    MSRP: $48.00
    $45.60
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  • Out of stock
    Forward Controls Design - Low Drag Forward Assist - Dimpled - LDFA-AA - 688201997373 - Boss Firearms - BossFirearms.com Forward Controls Design - Low Drag Forward Assist - Dimpled - LDFA-AA - 688201997373 - Boss Firearms - BossFirearms.com

    Forward Controls Design - Low Drag Forward Assist - Dimpled - LDFA-AA

    Forward Controls Design, Inc

    MSRP: $42.00
    $39.99
    The Forward Controls Design Low Drag Forward Assist — Dimpled (LDFA-AA) is FCD's low-profile forward assist for AR-15/M16 upper receivers, featuring FCD's all-around dimpled texture pattern. Like the standard LDFA, the LDFA-AA dramatically reduces the...
    MSRP: $42.00
    $39.99
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  • Forward Controls Design - Low Drag Forward Assist - LDFA - 688201997437 - Boss Firearms - BossFirearms.com Forward Controls Design - Low Drag Forward Assist - LDFA - 688201997437 - Boss Firearms - BossFirearms.com

    Forward Controls Design - Low Drag Forward Assist - LDFA

    Forward Controls Design, Inc

    MSRP: $42.00
    $39.99
    The Forward Controls Design Low Drag Forward Assist (LDFA) is FCD's sleek, redesigned forward assist for AR-15/M16 upper receivers. The standard AR-15 forward assist features a large, protruding serrated button that can snag on gear, kit, and clothing...
    MSRP: $42.00
    $39.99
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    MSRP: $42.00
    $39.99
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  • Out of stock
    AB Suppressor - Raptor Muzzle Thread Adapter - TA-5/8-24 - 679065311422 - Boss Firearms - BossFirearms.com

    AB Suppressor - Raptor Muzzle Thread Adapter - #TA-5/8-24

    AB Suppressor

    $26.00
    Ab Suppressor TA-5/8-24 Raptor Muzzle Thread Adapter 5/8"x24 to 1/2"x28 to 17-4 PH - A thread conversion piece that converts a 5/8"x24 thread pitch to 1/2 x 28. Each adapter is machined with all mating surfaces in one process.
    $26.00
    Qty in Cart: 0
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    $26.00
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    VKTR Industries 5.56 Combat Match Bolt Assembly - Precision Machined 9310 Alloy Steel V-2006-0701-001-RP

    VKTR Industries 5.56 Combat Match Bolt Assembly - Precision Machined 9310 Alloy Steel V-2006-0701-001-RP

    VKTR Industries

    $149.00
    The VK Combat Match Bolt offers unyielding combat reliability with the finesse, precision and accuracy of a match prepared part. Specifically designed for the greatest accuracy potential possible without sacrificing reliability in all conditions. This...
    $149.00
    Qty in Cart: 0
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    $149.00
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  • Out of stock
    On Sale
    LMT - 9″ 300blk Barrel w/ A2 Flash Hider - L7BW1B - 815415013749 - Boss Firearms - BossFirearms.com

    LMT - 9″ 300blk Barrel w/ A2 Flash Hider - #L7BW1B

    LMT Defense

    MSRP: $598.00
    Now: $538.20
    Was: $598.00
    The 9″ MRP .300BLK barrel is made from high-quality materials with a 1:7 twist for superior accuracy. It features a low-profile gas block firmly attached to prevent leakage or slipping and a straight gas tube that perfectly interfaces with the MRP...
    MSRP: $598.00
    Now: $538.20
    Was: $598.00
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    MSRP: $598.00
    Now: $538.20
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  • Out of stock
    On Sale
    Forward Controls Design - Quad Rail 9.5" - RHF4-9.5 - 686162347841 - Boss Firearms - BossFirearms.com Forward Controls Design - Quad Rail 9.5" - RHF4-9.5 - 686162347841 - Boss Firearms - BossFirearms.com

    Forward Controls Design - Quad Rail 9.5" - #RHF4-9.5

    Forward Controls Design, Inc

    Now: $250.85
    Was: $264.05
    We have long been fans of the classic KAC RAS since the early 2000s.  Throughout the years, we've seen trends for lighter, small diameter, and rails-only-where-you-want-them hand guards, this was before the advent of Keymod and MLOK.  Then quad...
    Now: $250.85
    Was: $264.05
    Qty in Cart: 0
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    Now: $250.85
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  • Forward Controls MARS-H Pivot and Take Down Pins Set - PF-040, MARS-H - 795847525051 - Boss Firearms - BossFirearms.com Forward Controls MARS-H Pivot and Take Down Pins Set - PF-040, MARS-H - 795847525051 - Boss Firearms - BossFirearms.com

    Forward Controls Design - MARS-H Pivot and Take Down Pins Set - PF-040

    Forward Controls Design, Inc

    MSRP: $40.00
    $38.00
    The Forward Controls Design MARS-H Pivot & Takedown Pins Set (PF-040 MARS-H) is FCD's precision enhanced pivot and takedown pin set specifically dimensioned for the LMT MARS-H (heavy/.308/AR-10) large-frame lower receivers. These pins are machined to...
    MSRP: $40.00
    $38.00
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    $38.00
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  • Out of stock
    Forward Controls - AR-15 Pivot & Take Down Pins Set - PF-040 - 680665827107 - Boss Firearms - BossFirearms.com Forward Controls - AR-15 Pivot & Take Down Pins Set - PF-040 - 680665827107 - Boss Firearms - BossFirearms.com

    Forward Controls Design - AR-15 Pivot & Take Down Pins Set - PF-040

    Forward Controls Design, Inc

    MSRP: $35.00
    $33.25
    The Forward Controls Design AR-15 Pivot & Takedown Pins Set (PF-040) is FCD's enhanced replacement pivot and takedown pin set for AR-15 lower receivers. FCD's PF-040 pins are machined to tighter tolerances than standard mil-spec pins, providing a...
    MSRP: $35.00
    $33.25
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    $33.25
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  • Forward Controls Design - Trigger Guard - FCD - Winter - Black - TGF - 683828757433 - Boss Firearms - BossFirearms.com Forward Controls Design - Trigger Guard - FCD - Winter - Black - TGF - 683828757433 - Boss Firearms - BossFirearms.com

    Forward Controls Design - Trigger Guard - TGF Winter

    Forward Controls Design, Inc

    MSRP: $25.00
    $23.75
    The Forward Controls Design Trigger Guard — Winter (TGF Winter) is FCD's enhanced winter trigger guard for AR-15/M16 pattern lower receivers. The TGF (Trigger Guard, Forward Controls) Winter variant features a larger, more open trigger guard opening than...
    MSRP: $25.00
    $23.75
    Qty in Cart: 0
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    MSRP: $25.00
    $23.75
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  • Out of stock
    On Sale
    Suppressor - SLX 5.56MM 11.5IN Upper Receiver SURG - UAMCXA-SURG 798681675456 - Boss Firearms - BossFirearms.com

    Suppressor - SLX 5.56MM 11.5IN Upper Receiver SURG - #UAMCXA-SURG

    Sig Sauer

    MSRP: $4,599.99
    Now: $4,099.99
    Was: $4,599.99
    MCX-SURG - Suppressed Upper Receiver Group - ***These are currently shipping in waves, and orders will be shipped out in the order they were received.*** SIG SAUER is proud to introduce the MCX-SURG (Suppressed Upper Receiver Group)...
    MSRP: $4,599.99
    Now: $4,099.99
    Was: $4,599.99
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    MSRP: $4,599.99
    Now: $4,099.99
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