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From rare destructive device components like M203 grenade launcher parts and hard-to-find AR-10 builder essentials, to duty-grade field support, premium knives, and precision aiming systems, we supply the equipment required for serious operators, armorers, and enthusiasts. Browse our curated, severe-duty inventory below.

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  • Forward Controls Design - Reinforced Buffer Retainer - For AR Systems - #RBF - 680665827220 - Boss Firearms - BossFirearms.com

    Forward Controls Design - Reinforced Buffer Retainer - For AR Systems - RBF

    Forward Controls Design, Inc

    MSRP: $8.00
    $7.60
    The Forward Controls Design Reinforced Buffer Retainer (RBF) is FCD's upgraded replacement for the factory AR-15 buffer retainer. The standard mil-spec buffer retainer is a known weak point in the AR-15 lower receiver — over time, repeated cycling and...
    MSRP: $8.00
    $7.60
    Qty in Cart: 0
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    MSRP: $8.00
    $7.60
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  • Out of stock
    Knight's Armament - Aimpoint Micro 45 Degree Offset Rail Mount - 115601 - 819064018391 - Boss Firearms - BossFirearms.com

    Knight's Armament - Aimpoint Micro 45° Offset Rail Mount - #115601

    Knights Armament Company

    MSRP: $163.72
    $156.43
    The KAC 45 Degree Offset Aimpoint Micro Mount is intended to be attached to either the 3 o’clock or 9 o’clock rail position, placing the red dot to the side of a primary optic at a 45-degree angle. A quick roll of the rifle is all...
    MSRP: $163.72
    $156.43
    Qty in Cart: 0
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    MSRP: $163.72
    $156.43
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  • LMT Defense - SOPMOD-Mini Buttstock Kit - 5.56 - #PDW-KIT - 815415016283 - Boss Firearms

    LMT Defense - SOPMOD-Mini 5.56 Buttstock Kit - PDW-KIT

    LMT Defense

    $560.50
    The LMT Defense SOPMOD-Mini 5.56 PDW Buttstock Kit (PDW-KIT) is a complete Personal Defense Weapon conversion kit for any mil-spec AR-15. This kit reduces overall weapon length by 2.75 inches compared to a standard SOPMOD stock configuration — without...
    $560.50
    Qty in Cart: 0
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    $560.50
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  • On Sale
    Magpul PMAG M3 30rd .223/5.56mm AR15 Magazine - MAG557-BLK - 873750006178 - Boss Firearms - BossFirearms.com Magpul PMAG M3 30rd .223/5.56mm AR15 Magazine - MAG557-BLK - 873750006178 - Boss Firearms - BossFirearms.com

    Magpul PMAG M3 30rd .223/5.56mm AR15 Magazine

    Magpul Industries

    MSRP: $14.95
    Now: $14.20
    Was: $14.95
    The Magpul PMAG 30 AR/M4 GEN M3 .223/5.56 Magazine — Black (MAG557-BLK) is Magpul's industry-standard 30-round GEN M3 PMAG for AR-15/M4 rifles in black. The GEN M3 PMAG is the gold standard for AR-15 magazine reliability — trusted by military, law...
    MSRP: $14.95
    Now: $14.20
    Was: $14.95
    Qty in Cart: 0
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    MSRP: $14.95
    Now: $14.20
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  • Proof Research Carbon Fiber Q The Fix Barrel - 752-16-65 - 752-16-30 - 752-18-65 - 752-18-30 - 752-20-65 - 20in308q - Boss Firearms - BossFirearms.com Proof Research Carbon Fiber Q The Fix Barrel - 752-16-65 - 752-16-30 - 752-18-65 - 752-18-30 - 752-20-65 - 20in308q - Boss Firearms - BossFirearms.com

    Proof Research Carbon Fiber Q The Fix Barrel (Choose options below)

    Proof Research

    $1,199.00
    Proof Research Carbon Fiber Q The Fix Barrel is a precision-machined carbon fiber replacement barrel designed specifically for Q (Q LLC) The Fix bolt-action rifle. The Fix is Q's innovative chassis rifle that accepts AR-style magazines, and this Proof...
    $1,199.00
    Qty in Cart: 0
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    $1,199.00
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  • Out of stock
    Knights Armament - SR-15 Ambidextrous Charging Handle Assembly - KM31177 - 819064012498 - Boss Firearms - BossFirearms.com

    Knights Armament - SR-15 Ambidextrous Charging Handle Assembly - #KM31177

    Knights Armament Company

    $178.20
    The KAC 5.56mm Ambidextrous Charging Handle is another step forward in the effort to deliver the most ergonomic firearm accessories to the end user. Intermediate sized latch pads are easily accessible and permit manipulation of the charging handle with a...
    $178.20
    Qty in Cart: 0
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    $178.20
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  • LMT Defense 5.56mm 16" Piston MRP Barrel Assembly - L7PC1B - 815415011462 - Boss Firearms

    LMT Defense 5.56mm 16" Piston MRP Barrel Assembly

    LMT Defense

    $716.85
    The LMT Defense 5.56mm 16" Piston MRP Barrel Assembly (L7PC1B) is a 16-inch chrome lined 5.56×45 (.223) barrel featuring LMT's short-stroke piston operating system — the key upgrade for shooters who demand reduced fouling, cooler operating temperatures,...
    $716.85
    Qty in Cart: 0
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    $716.85
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  • Forward Controls Design – SOTAR Cam Pin - Fits AR15/M16 Systems - #SCP-NP3 - 686162347858 - Boss Firearms - Bossfirearms.com

    Forward Controls Design - Sotar Cam Pin - Fits AR15/M16 Systems- SCP-NP3

    Forward Controls Design, Inc

    MSRP: $17.00
    $16.15
    The Forward Controls Design Sotar Cam Pin — NP3 Finish (SCP-NP3) is FCD's premium replacement bolt carrier group cam pin for AR-15/M16 platforms, finished in Robar's NP3 electroless nickel-PTFE coating. The Sotar Cam Pin is precision machined from the...
    MSRP: $17.00
    $16.15
    Qty in Cart: 0
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    MSRP: $17.00
    $16.15
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  • LMT Defense Ambidextrous AR-15 Magazine Release - MARS-L & MARS-H - LM308A6 - Boss  Firearms

    LMT Defense - MARS-(L/H) Ambidextrous AR-15 Magazine Release - LM308A6

    LMT Defense

    MSRP: $24.00
    $22.32
    The LMT Defense MARS-(L/H) Ambidextrous AR-15 Magazine Release (LM308A6) is a genuine LMT OEM replacement ambidextrous magazine release for MARS-L and MARS-H lower receivers. The ambidextrous magazine release is a core feature of the LMT MARS system —...
    MSRP: $24.00
    $22.32
    Qty in Cart: 0
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    MSRP: $24.00
    $22.32
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  • Out of stock
    LMT Defense Bolt Catch & Ambidextrous Magazine Release Roll Pin - LMP251 - Boss Firearms

    LMT Defense Bolt Catch & Ambidextrous Magazine Release Roll Pin #LMP251

    LMT Defense

    $3.15
    Having a spare is never the wrong answer, so keep your kit ready to roll with a spare bolt catch roll pin for your AR-15.Features: MIL-SPEC construction Made in the U.S.A. Lewis Machine and Tool is dedicated to providing you with high quality products...
    $3.15
    Qty in Cart: 0
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    $3.15
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  • Out of stock
    On Sale
    Knight's Armament - 5 Rib Rail Panel - Black - #97167 - 819064012290 - Boss Firearms - BossFirearms.com

    Knight's Armament - 5 Rib Rail Panel - Black - #97167

    Knights Armament Company

    Now: $26.59
    Was: $27.99
    KAC’s iconic Ribbed Rail Panels have seen use all over the globe on US military M4 Carbines. The lightweight polymer panels are ribbed for an enhanced grip, and help insulate the support hand from barrel heat. While originally designed for use on...
    Now: $26.59
    Was: $27.99
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  • Out of stock
    Glock 17/34 OEM 33rd. Olive Drab Magazine - 47462 - 764503027383 - Boss Firearms - BossFirearms.com

    Glock 17/34 OEM 33rd. Olive Drab Magazine - 47462

    Glock

    $40.00
    Each GLOCK magazine is constructed from a hardened steel insert encased in high tech polymer to protect the magazine and prevent deformation, even when dropped from a great height. The high quality spring and follower ensure reliable feeding from the...
    $40.00
    Qty in Cart: 0
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    $40.00
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