Upper Receiver

Upper Receiver

Find the exact complete or stripped AR-15 upper receiver for your next build. We stock forged and billet uppers, cold hammer-forged barrels, low-profile gas blocks, and advanced bolt carrier groups (BCGs) engineered for extreme reliability and sub-MOA accuracy.

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  • Out of stock
    Ruger - Standard Ruger MK IV Upper 6" - VCSCU‑0008 - Boss Firearms - BossFirearms.com Ruger - Standard Ruger MK IV Upper 6" - VCSCU‑0008 - Boss Firearms - BossFirearms.com

    Ruger - Standard Ruger MK IV Upper 6" Barreled Receiver .22 LR - #VCSCU‑0008

    Ruger

    $30.00
    This is a factory new never fired Ruger MK IV stripped barreled receiver chambered for .22 LR. This upper comes with adjustable sights and a 6" stubby pencil profile barrel.  The push-button takedown makes switching uppers easier than switching from...
    $30.00
    Qty in Cart: 0
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    $30.00
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  • LMT Defense - Full-Auto .308 Bolt Carrier Group - #LM308DA

    LMT Defense - Full-Auto .308 Bolt Carrier Group - LM308DA

    LMT Defense

    MSRP: $620.00
    $575.10
    The LMT Defense Full-Auto .308 Bolt Carrier Group (LM308DA) is a mil-spec 7.62×51 NATO bolt carrier group engineered for LMT's MWS (Modular Weapon System) platform. Full-auto rated for maximum durability, this BCG exceeds the demands of high-volume...
    MSRP: $620.00
    $575.10
    Qty in Cart: 0
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    MSRP: $620.00
    $575.10
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  • Out of stock
    VLTOR - Modular Upper Receiver - MUR-1A - Boss Firearms - BossFirearms.com VLTOR - Modular Upper Receiver - MUR-1A - Boss Firearms - BossFirearms.com

    VLTOR - Modular Upper Receiver - MUR-1A

    Vltor Weapon Systems

    MSRP: $269.95
    $242.96
    The VLTOR MUR-1A Modular Upper Receiver is a premium mil-spec upper receiver for AR-15 builds, machined from 7075 T6 aluminum with a Type III hard anodize finish for outstanding strength and corrosion resistance. The MUR-1A is a stripped upper receiver...
    MSRP: $269.95
    $242.96
    Qty in Cart: 0
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    MSRP: $269.95
    $242.96
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  • VLTOR - Set Screw Gas Block - 0.625" to 0.750" Bore - Boss Firearms - BossFirearms.com VLTOR - Set Screw Gas Block - 0.625" to 0.750" Bore - Boss Firearms - BossFirearms.com

    VLTOR - Set Screw Gas Block - 0.625" to 0.750" Bore GB-S

    Vltor Weapon Systems

    $64.95
    The VLTOR Set Screw Gas Block (GB-S) is a low-profile, steel gas block engineered to replace the standard front sight base on AR-15 barrels, allowing use of free-float handguards without obstruction. The set-screw design (versus pinned) enables tool-free...
    $64.95
    Qty in Cart: 0
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    $64.95
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  • VLTOR - A5 Buffer - 3.80oz to 6.83oz - #A5H - Boss Firearms - BossFirearms.com VLTOR - A5 Buffer - 3.80oz to 6.83oz - #A5H - Boss Firearms - BossFirearms.com

    VLTOR - A5 BUFFER - 3.80 TO 6.83OZ - A5H

    Vltor Weapon Systems

    $44.06 - $148.46
    The VLTOR A5 Buffer (A5H) is the critical component of VLTOR's A5 buffer system, a drop-in upgrade that replaces the standard mil-spec carbine buffer and spring with a longer, heavier buffer optimized for carbine-length AR-15 systems. The A5 buffer...
    $44.06 - $148.46
    Qty in Cart: 0
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    $44.06 - $148.46
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  • Out of stock
    VLTOR - AR15 Charging Handle - 5.56 - VCH-AR15 - Boss Firearms - BossFirearms.com VLTOR - AR15 Charging Handle - 5.56 - VCH-AR15 - Boss Firearms - BossFirearms.com

    VLTOR - AR15 Charging Handle - 5.56 - #VCH

    Vltor Weapon Systems

    MSRP: $65.95 - $105.95
    $64.76 - $98.06
    After a years-long stint in legal and logistical purgatory, the best-selling charging handle of the past decade has made its return. Previously licensed and distributed by BCM as the original GUNFIGHTER™ Charging Handle, VLTOR’s patented...
    MSRP: $65.95 - $105.95
    $64.76 - $98.06
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    MSRP: $65.95 - $105.95
    $64.76 - $98.06
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  • Out of stock
    On Sale
    Q - Cherry Bomb Muzzle Brake - 8.6 Blackout - #CB-M18-1-5 - Boss Firearms - BossFirearms.com

    Q LLC - Cherry Bomb Muzzle Brake - 8.6 Blackout - #CB-M18-1-5

    Q LLC

    MSRP: $100.00
    Now: $90.00
    Was: $100.00
    Q LLC Cherry Bomb muzzle brake chambered in 8.6 Blackout. This is a Quickie Fast-Attach muzzle brake compatible with the THUNDER CHICKEN and trash PANDA silencers by Q.  It features our taper mount shoulder to align with our barrels and...
    MSRP: $100.00
    Now: $90.00
    Was: $100.00
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    MSRP: $100.00
    Now: $90.00
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  • Forward Controls Design - 6310RF 5/8 x 24 Flash Suppressor / Compensator - #6310RF Forward Controls Design - 6310RF 5/8 x 24 Flash Suppressor / Compensator - #6310RF

    Forward Controls Design - 6310RF 5/8 x 24 Flash Suppressor / Compensator - 6310RF

    Forward Controls Design, Inc

    MSRP: $90.00
    $85.50
    The Forward Controls Design 6310RF Flash Suppressor / Plan B Mount — 5/8x24 (6310RF) is FCD's premium 3-prong flash hider and Plan B/Atlas compatible suppressor mount for .308/7.62x51mm rifles with 5/8x24 muzzle threading. Designed with Revival Defense,...
    MSRP: $90.00
    $85.50
    Qty in Cart: 0
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    MSRP: $90.00
    $85.50
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  • Forward Controls Design - 308 Ambidextrous Charging Handle Black - ACF-308 - 686162348053 - Boss Firearms - BossFirearms.com Forward Controls Design - 308 Ambidextrous Charging Handle Black - ACF-308 - 686162348053 - Boss Firearms - BossFirearms.com

    Forward Controls Design - 308 Ambidextrous Charging Handle Black - ACF-308

    Forward Controls Design, Inc

    MSRP: $125.00
    $118.75
    The Forward Controls Design .308/7.62 Ambidextrous Charging Handle — Black (ACF-308) is FCD's duty-grade ambidextrous charging handle designed for .308/7.62x51mm large-frame AR-10/SR-25 pattern rifles including LMT MWS and MARS-H platforms. Features...
    MSRP: $125.00
    $118.75
    Qty in Cart: 0
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    MSRP: $125.00
    $118.75
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  • Out of stock
    LMT Defense - Flat Top Upper Receiver - Defender-L 5.56 Lower Receiver Stripped - #L7D1A-LMP149H-COMBO - Boss Firearms - BossFirearms.com LMT Defense - Flat Top Upper Receiver - Defender-L 5.56 Lower Receiver Stripped - #L7D1A-LMP149H-COMBO - Boss Firearms - BossFirearms.com

    LMT Defense - Flat Top Upper Receiver - Defender-L 5.56 Lower Receiver Stripped - #L7D1A-LMP149H-COMBO

    LMT Defense

    $423.00
    Get your LMT L7D1A upper receiver and LMT LMP149H lower receiver combo for your AR15 build ordered today! UPPER RECEIVER The LMT Defense standard flat-top AR15 upper receiver features mil-spec compatibility and pre-installed components for use in builds...
    $423.00
    Qty in Cart: 0
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    $423.00
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  • Forward Controls Design - 3 Prong Flash Suppressor - #FCD-3P15 - 795847525112 - Boss Firearms - BossFirearms.com Forward Controls Design - 3 Prong Flash Suppressor - #FCD-3P15 - 795847525112 - Boss Firearms - BossFirearms.com

    Forward Controls Design - 3 Prong Flash Suppressor - FCD-3P15

    Forward Controls Design, Inc

    MSRP: $90.00
    $85.50
    The Forward Controls Design 3-Prong Flash Suppressor / Plan B Mount (FCD-3P15) is a multi-functional muzzle device designed in collaboration with Revival Defense — functioning as both a standalone 3-prong flash hider and a Plan B/Atlas compatible...
    MSRP: $90.00
    $85.50
    Qty in Cart: 0
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    MSRP: $90.00
    $85.50
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  • Out of stock
    On Sale
    Forward Controls Design -  SIG MCX Ambidextrous Charging Handle - Black - #ACF-MCX - 795847524979 - Boss Firearms - BossFirearms.com

    Forward Controls Design - SIG MCX Ambidextrous Charging Handle - Black - #ACF-MCX

    Forward Controls Design, Inc

    MSRP: $120.00
    Now: $102.00
    Was: $114.00
    ACF-MCX is closely based on the AR15/M16 version of the original ACF. Like the factory SIG MCX charging handle, MCX-ACF has two latches. Design objectives: 1. A stronger, more durable ambidextrous charging handle that can withstand repeated mortaring. 2...
    MSRP: $120.00
    Now: $102.00
    Was: $114.00
    Qty in Cart: 0
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    MSRP: $120.00
    Now: $102.00
    Was: $114.00
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