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We are an authorized master dealer for the industry’s most respected defense manufacturers, custom shops, and tactical innovators. Whether you are building an operational duty carbine with Mil-Spec Knight’s Armament and LMT parts, upgrading an EDC sidearm with Radian and Unity components, or securing a precision Q suppressor, we stock the hard-use, duty-grade equipment trusted by military, law enforcement, and serious civilian shooters worldwide.

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  • LMT Defense - MARS-H Stripped AR10 Lower Receiver LM308AMSL Code "LMT20" at Checkout for 20% Off LMT Defense - MARS-H Stripped AR10 Lower Receiver - LM308AMSL - 815415016467 - Boss Firearms - BossFirearms.com

    LMT Defense - MARS-H Stripped AR10 Lower Receiver LM308AMSL Code "LMT20" at Checkout for 20% Off

    LMT Defense

    MSRP: $588.00
    $545.40
    Use Code "LMT20" at Checkout to Save 20% The LMT Modular Ambidextrous Rifle System (MARS) lower receiver offers ambidextrous controls to include the selector, magazine release and bolt catch and...
    MSRP: $588.00
    $545.40
    Qty in Cart: 0
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    MSRP: $588.00
    $545.40
    Subtotal:
  • LMT Defense - MARS-L DMR Complete AR15 Lower Receiver - M7DM4 - 815415016986 - Boss Firearms - BossFirearms.com

    LMT Defense - MARS-L DMR Complete AR15 Lower Receiver - M7DM4

    LMT Defense

    $1,100.00
    The LMT Defense MARS-L DMR Complete AR15 Lower Receiver (M7DM4) is purpose-built for designated marksman rifle (DMR) configurations. The LMT® Modular Ambidextrous Rifle System (MARS®) lower receiver...
    $1,100.00
    Qty in Cart: 0
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    $1,100.00
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  • LMT Defense - MARS-L PDW Complete AR15 Lower Receiver - M7DA4SH - 815415016993 - Boss Firearms - BossFireams.com

    LMT Defense - MARS-L PDW Complete AR15 Lower Receiver - M7DA4SH

    LMT Defense

    $1,019.70
    The LMT Defense MARS-L PDW Complete AR15 Lower Receiver (M7DA4SH) is a fully assembled, ready-to-build lower receiver featuring LMT's legendary MARS® ambidextrous control system. The LMT® Modular...
    $1,019.70
    Qty in Cart: 0
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    $1,019.70
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  • Out of stock
    On Sale
    LMT Defense - Defender-L Stripped Lower Receiver - LMP149H - 815415013459 - Boss Firearms - BossFirearms.com

    LMT Defense - Defender-L Stripped Lower Receiver - #LMP149H

    LMT Defense

    MSRP: $195.00
    Now: $175.50
    Was: $180.90
    This stripped AR-15 lower is forged from highly durable 7075 aluminum and has a hardcoat anodized finish. It is fully compatible with Mil-Spec lower parts and made to the exacting tolerances LMT is...
    MSRP: $195.00
    Now: $175.50
    Was: $180.90
    Qty in Cart: 0
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    MSRP: $195.00
    Now: $175.50
    Was: $180.90
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  • Out of stock
    LMT Defense - 5.56mm M4/M16 20" AR15 Barrel Assembly - LMP10409 - Boss Firearms - BossFirearms.com

    LMT Defense - 5.56mm M4/M16 20" AR15 Barrel Assembly - LMP10409

    LMT Defense

    $440.10
    20″ CHROME LINED 1:7″ TWIST M16/M4-STYLE 5.56 BARREL W/ A-FRAME FRONT SIGHT HOUSING. DOES NOT INCLUDE UPPER RECEIVER, FRONT SIGHT POST, SWIVEL, OR SLIP RING...
    $440.10
    Qty in Cart: 0
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    $440.10
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  • Out of stock
    On Sale
    LMT Defense - 5.56mm M4/M16 16" AR15 Barrel Assembly - LMP10405 - Boss Firearms - BossFirearms.com

    LMT Defense - 5.56mm M4/M16 16" AR15 Barrel Assembly - LMP10405

    LMT Defense

    Now: $401.40
    Was: $424.80
    This is a Lewis Machine & Tool M4/M16 style 16-inch .223/5.56mm barrel assembly. It features 1/2x28 muzzle threads, a pinned flat-top height front sight gas block, carbine-length gas system,...
    Now: $401.40
    Was: $424.80
    Qty in Cart: 0
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    Now: $401.40
    Was: $424.80
    Subtotal:
  • Out of stock
    On Sale
    LMT Defense - 5.56mm M4/M16 14.5" AR15 Barrel Assembly - LMP10406 - Boss Firearms - BossFirearms.com

    LMT Defense - 5.56mm M4/M16 14.5" AR15 Barrel Assembly - LMP10406

    LMT Defense

    Now: $401.40
    Was: $428.40
    This is a Lewis Machine & Tool M4/M16 style 14.5-inch .223/5.56mm barrel assembly. It features 1/2x28 muzzle threads, a pinned flat-top height front sight gas block, carbine-length gas system,...
    Now: $401.40
    Was: $428.40
    Qty in Cart: 0
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    Now: $401.40
    Was: $428.40
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  • Out of stock
    On Sale
    LMT Defense - 5.56mm M4/M16 10.5" AR15 Barrel Assembly - LMP10408 - Boss Firearms - BossFirearms.com

    LMT Defense - 5.56mm M4/M16 10.5" AR15 Barrel Assembly - LMP10408

    LMT Defense

    Now: $401.40
    Was: $451.80
    This is a Lewis Machine & Tool M4/M16 style 10.5-inch .223/5.56mm barrel assembly. It features 1/2x28 muzzle threads, a pinned flat-top height front sight gas block, delta-ring handguard retainer, GI...
    Now: $401.40
    Was: $451.80
    Qty in Cart: 0
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    Now: $401.40
    Was: $451.80
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  • LMT Defense - 12" Piston MRP 5.56mm Barrel Assembly - #L7MC1B - 815415011455 - Boss Firearms - BossFirearms.com

    LMT Defense - 12" Piston MRP 5.56mm Barrel Assembly - #R-L7MC1B

    LMT Defense

    $716.85
    12″ Piston Chrome Lined 5.56×45 (.223) 1:7″ RH twist barrel Designed for the LMT monolithic receiver, this barrel utilizes a piston operating rod and has an A2 birdcage for reduced flash. The barrel...
    $716.85
    Qty in Cart: 0
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    $716.85
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  • Out of stock
    On Sale
    LMT Defense - 5.56mm 16" Stainless Steel MRP Barrel Assembly - L7SB1S - 815415015019 - Boss Firearms - BossFirearms.com

    LMT Defense - 5.56mm 16" Stainless Steel MRP Barrel Assembly - L7SB1S

    LMT Defense

    Now: $803.70
    Was: $893.00
    16″ Stainless Steel 5.56×45 (.223) 1:7.5″ RH 5R cut barrel Designed for the LMT monolithic receiver, this barrel utilizes a low profile gas block, mid length straight gas tube, and A2 birdcage for...
    Now: $803.70
    Was: $893.00
    Qty in Cart: 0
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    Now: $803.70
    Was: $893.00
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  • Out of stock
    On Sale
    LMT Defense - 5.56mm 20" Stainless Steel MRP Barrel Assembly - L7SD1S - 815415015026 - Boss Firearms - BossFirearms.com

    LMT Defense - 5.56mm 20" Stainless Steel MRP Barrel Assembly - L7SD1S

    LMT Defense

    Now: $803.70
    Was: $893.00
    This is a new Lewis Machine & Tool 20-inch stainless-steel MRP barrel chambered for .223/5.56mm. It features a 1/2x28 threaded A2 birdcage flash hider, low profile gas block with a rifle-length...
    Now: $803.70
    Was: $893.00
    Qty in Cart: 0
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    Now: $803.70
    Was: $893.00
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  • Out of stock
    On Sale
    LMT Defense - 5.56mm 20" Chrome Lined MRP Barrel Assembly - L7RA1B - 815415016771 - Boss Firearms - BossFirearms.com

    LMT Defense - 5.56mm 20" Chrome Lined MRP Barrel Assembly - L7RA1B

    LMT Defense

    Now: $538.20
    Was: $554.40
    20″ Chrome Lined 5.56×45 (.223) 1:7″ RH twist barrel Designed for the LMT monolithic receiver, this barrel utilizes a low profile gas block, rifle length straight gas tube, and A2 birdcage for...
    Now: $538.20
    Was: $554.40
    Qty in Cart: 0
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    Price:
    Now: $538.20
    Was: $554.40
    Subtotal:
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