Gun Parts

Gun Parts

Welcome to the Gun Parts superstore at Boss Firearms Company, LLC. Whether you are undertaking a custom precision build, performing routine armorer maintenance, or upgrading an existing platform, we stock the high-performance components you need. As an authorized dealer for premium OEM and aftermarket manufacturers, we provide everything from stripped receivers and match-grade triggers to enhanced bolt carrier groups (BCGs) and duty-ready barrels for rifles, handguns, and shotguns.

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    LMT DEFENSE TACTICAL FRONT SIGHT - L8FS - 815415010236 - Boss Firearms
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    LMT Defense - Tactical Front Sight - L8FS

    LMT Defense

    Now: $87.30
    Was: $90.00
    The LMT Defense Tactical Front Sight was designed to give users of same plane upper receivers and rail systems, the ability to utilize a fixed front sight with full elevation adjustment. This front...
    Now: $87.30
    Was: $90.00
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    Now: $87.30
    Was: $90.00
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  • Out of stock
    LMT Defense - .260 Rem. 20" MWS Barrel Assembly - #LM260B220S - 815415013701 - Boss Firearms
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    LMT Defense - 20" MWS .260 REM Barrel Assembly - #R-LM260B220S

    LMT Defense

    $893.00
    The 20-inch stainless-steel .260 Remington chambered MWS barrel features 5R right-hand rifling with a 1:9 twist. Designed for the LMT MWS receiver, this barrel utilizes a low-profile gas block,...
    $893.00
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    $893.00
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  • Out of stock
    On Sale
    LMT Defense 5.56mm 14.5" Piston MRP Barrel Assembly - L7NC1B - 815415016788 - Boss Firearms
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    LMT Defense 5.56mm 14.5" Piston MRP Barrel Assembly

    LMT Defense

    Now: $695.70
    Was: $716.85
    Lewis Machine & Tool piston operated 14.5-inch MRP barrel chambered for .223/5.56mm. It features a 1/2x28 threaded A2 birdcage flash hider, two-position adjustable gas block for suppressed and...
    Now: $695.70
    Was: $716.85
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    Now: $695.70
    Was: $716.85
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    LMT Defense 5.56 Full Auto Piston Bolt Carrier Group - L7D3CP - Boss Firearms
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    LMT Defense 5.56 Full Auto Piston Bolt Carrier Group - L7D3CP

    LMT Defense

    $468.00
    This is a new Lewis Machine & Tool 5.56 piston AR15 bolt carrier group for use in piston-operated systems. It features optimization for use in short-barreled rifles.
    $468.00
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    $468.00
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  • Out of stock
    LMT Defense Torque Wrench for MRP & MWS Barrel Locking Screws - R-LTW - 815415016702 - Boss Firearms
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    LMT Defense - Torque Wrench - R-LTW

    LMT Defense

    MSRP: $108.00
    $100.35
    The LMT Defense Torque Wrench (R-LTW) is a precision tool purpose-built for LMT MRP and MWS barrel systems. Pre-set to 140 inch-pounds, this torque wrench ensures proper installation of MRP and MWS...
    MSRP: $108.00
    $100.35
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    MSRP: $108.00
    $100.35
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    Out of stock
  • BT Atlas - V8 Atlas Bipod - BT10 - 810040220081 - Boss Firearms - BossFirearms.com BT Atlas - V8 Atlas Bipod - BT10 - 810040220081 - Boss Firearms - BossFirearms.com
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    BT Atlas - V8 Atlas Bipod - BT10

    BT Atlas

    $299.95
    The BT10 V8 Atlas Bipod mounts directly to any 1913 style Picatinny rail via a low profile two screw clamp assembly. It is comprised of 6061-T6 aluminum that is Mil-Spec Type III hard coat anodized...
    $299.95
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    $299.95
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    Aimpoint - Used Micro H-2 Red Dot Reflex Sight 2 MOA LRP Mount and Spacer - 200211-USED - Boss Firearms - BossFirearms.com Aimpoint - Used Micro H-2 Red Dot Reflex Sight 2 MOA LRP Mount and Spacer - 200211-USED - Boss Firearms - BossFirearms.com
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    Aimpoint - Used Micro H-2 Red Dot Reflex Sight 2 MOA LRP Mount and Spacer - 200211-USED

    Used

    Now: $495.00
    Was: $550.00
    This is a used Aimpoint Micro H-2 compact reflex optic with a 2 MOA red dot reticle with an AR-15 ready QD picatinny mount.  This optic ships as shown with no factory packaging and it is in great...
    Now: $495.00
    Was: $550.00
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    Now: $495.00
    Was: $550.00
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  • Out of stock
    Knight's Armament - Like New 5.56 QDC 3-Prong Flash Suppressor Kit - 1/2"-28 TPI - 30555-Like-New - 819064010944 - Boss Firearms - BossFirearms.com Knight's Armament - Like New 5.56 QDC 3-Prong Flash Suppressor Kit - 1/2"-28 TPI - 30555-Like-New - 819064010944 - Boss Firearms - BossFirearms.com
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    Knight's Armament - Like New 5.56 QDC 3-Prong Flash Suppressor Kit - 1/2"-28 TPI - 30555-Like-New

    Knights Armament Company

    $89.00
    These are in like-new condition, they were new rifle takeoffs. The KAC 3-Prong Flash Eliminator is an extremely effective flash suppressor design that also serves as a platform for attaching a...
    $89.00
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    $89.00
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  • Out of stock
    Knight's Armament - DOD Surplus M16 M5 RAS Forend Assembly w/ No Rib Rail Panels - 98065-1-DOD - Boss Firearms - BossFirearms.com Knight's Armament - DOD Surplus M16 M5 RAS Forend Assembly w/ No Rib Rail Panels - 98065-1-DOD - Boss Firearms - BossFirearms.com
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    Knight's Armament - DOD Surplus M16 M5 RAS Forend Assembly w/ No Rib Rail Panels - #98065-1-DOD

    Knights Armament Company

    $400.00
    DOD Surplus Stock KAC M5 RAS (Rail Adapter System) was developed for use on the US military's M16A4, and with hundreds of thousands of rails issued to date, it is one of the most battle proven...
    $400.00
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    $400.00
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  • On Sale
    Aimpoint - ACRO S-2™ 9 MOA - Red Dot Reflex Sight w/ Integrated Shotgun Rib Mount - 200907 - 7350004387465 - Boss Firearms - BossFirearms.com Aimpoint - ACRO S-2™ 9 MOA - Red Dot Reflex Sight w/ Integrated Shotgun Rib Mount - 200907 - 7350004387465 - Boss Firearms - BossFirearms.com
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    Aimpoint - ACRO S-2™ 9 MOA - Red Dot Reflex Sight w/ Integrated Shotgun Rib Mount - 200907

    Aimpoint

    Now: $755.00
    Was: $839.00
    The Aimpoint ACRO S-2™ 9 MOA Red Dot Reflex Sight (Model 200907) is Aimpoint's dedicated shotgun red dot sight, purpose-built for mounting on ventilated shotgun ribs. Based on the proven Acro 2nd...
    Now: $755.00
    Was: $839.00
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    Now: $755.00
    Was: $839.00
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  • Trijicon - ACOG 1.5X16mm Dual Illuminated Green Ring & 2 MOA Dot - TA44-C-400329 - 719307313880 - Boss Firearms - BossFirearms.com Trijicon - ACOG 1.5X16mm Dual Illuminated Green Ring & 2 MOA Dot - TA44-C-400329 - 719307313880 - Boss Firearms - BossFirearms.com
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    Trijicon - ACOG 1.5X16mm Dual Illuminated Green Ring & 2 MOA Dot - TA44-C-400329

    Trijicon

    $1,357.00
    The Trijicon 1.5x16S Compact ACOG® Scope (Model TA44-C-400329) is the ultimate compact riflescope for close-quarters combat, tactical teams, and speed-oriented competition. The ACOG (Advanced Combat...
    $1,357.00
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    $1,357.00
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