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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    Heckler & Koch - MR556 Complete Upper Receiver Kit - 81000584 - 642230262607 - Boss Firearms - BossFirearms.com
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    Heckler & Koch - MR556 Complete Upper Receiver Kit - 81000584

    Heckler & Koch

    $2,069.00
    The MR556A1 Upper Receiver Kit includes a complete upper receiver/barrel assembly, bolt carrier assembly, buffer, and buffer spring allowing most high-quality 5.56 mm AR-style rifles to be...
    $2,069.00
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    $2,069.00
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    Magpul - Angled Foregrip 2 - MAG414-BLK - 873750003429 - Boss Firearms - BossFireams.com
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    Magpul - Angled Foregrip 2 - MAG414-BLK

    Now: $33.20
    Was: $34.95
    The AFG-2 is a slim line design that is shorter in overall length and width compared to the original AFG. Smaller size allows for mounting on a wider variety of railed hand guards and better...
    Now: $33.20
    Was: $34.95
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    Magpul - MOE M-Lok Handguard - MAG424-BLK - 873750002378 - Boss Firearms - BossFirearms.com
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    Magpul - MOE M-Lok Handguard - MAG424-BLK

    Magpul Industries

    Now: $35.10
    Was: $36.95
    The Magpul MOE M-LOK Hand Guard (Magpul Original Equipment) for AR15/M4 firearms with carbine-length gas systems combines the light weight of a standard hand guard with modular flexibility. Designed...
    Now: $35.10
    Was: $36.95
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    Magpul - MOE M-Lok Forend Remington 870 - MAG496-BLK - 873750004563 - Boss Firearms - BossFirearms.com
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    Magpul - MOE M-Lok Forend Remington 870 - MAG496-BLK

    Magpul Industries

    Now: $28.45
    Was: $29.95
    The MOE M-LOK Forend is a drop-in replacement for the standard Remington 870 12ga shotgun, featuring an extended length and front/rear hand stops for improved weapon manipulation. Now updated with...
    Now: $28.45
    Was: $29.95
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  • BT Atlas - V8 Atlas Bipod w/ADM-170-S Lever - BT10-LW17 - Boss Firearms - BossFirearms.com BT Atlas - V8 Atlas Bipod w/ADM-170-S Lever - BT10-LW17 - Boss Firearms - BossFirearms.com
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    BT Atlas - V8 Atlas Bipod w/ADM-170-S Lever - BT10-LW17

    BT Atlas

    $294.95
    The BT10-LW17 V8 Atlas Bipod mounts directly to any 1913 style Picatinny rail via the included ADM-170-S lever. It is comprised of 6061-T6 aluminum that is Mil-Spec Type III hard coat anodized and...
    $294.95
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    BT Atlas - PSR Atlas Bipod Standard Height w/ADM 17-S lever - BT46-LW17 - Boss Firearms - BossFirearms.com BT Atlas - PSR Atlas Bipod Standard Height w/ADM 17-S lever - BT46-LW17 - Boss Firearms - BossFirearms.com
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    BT Atlas - PSR Atlas Bipod Standard Height w/ADM 17-S lever - BT46-LW17

    BT Atlas

    $459.95
    The BT46-LW17 PSR (Precision Sniper Rifle) Atlas Bipod mounts directly to any 1913 style Picatinny rail via the included ADM-170-S lever. It is comprised of 6061-T6 aluminum, except the strengthened...
    $459.95
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    Sig Sauer - Tango MSR Rifle Scope 1-10x28mm - SOTM11000 - 798681656097 - Boss Firearms - BossFirearms.com Sig Sauer - Tango MSR Rifle Scope 1-10x28mm - SOTM11000 - 798681656097 - Boss Firearms - BossFirearms.com
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    Sig Sauer - Tango MSR Rifle Scope 1-10x28mm - SOTM11000

    Sig Sauer

    Now: $579.99
    Was: $759.99
    Introducing the TANGO-MSR line of riflescopes by Sig Sauer. Featuring three new low power variable optics loaded with standard features and offered at an incredible value. These new models include...
    Now: $579.99
    Was: $759.99
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    CMMG - AR-15 Lower Parts Kit w/ Ambidextrous Selector - 55CA6B8 - 815835012339 - Boss Firearms - BossFirearms.com
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    CMMG - AR-15 Lower Parts Kit w/ Ambidextrous Selector - 55CA6B8

    CMMG

    $74.95
    Complete kit contains every internal part needed to complete or rebuild an AR lower receiver. High-quality components are designed to work in coordination with each other to ensure smooth operation,...
    $74.95
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    Q - Cherry Bomb Muzzle Brake - CB-1/2-28 - 860248000435 - Boss Firearms - BossFirearms.com
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    Q LLC - Cherry Bomb Muzzle Brake - CB-1/2-28

    Q LLC

    Now: $90.00
    Was: $100.00
    Q Cherry Bomb muzzle brake chambered for 7.62mm rifles that is compatible with the THUNDER CHICKEN and trash PANDA silencers by Q. It features a taper mount shoulder to align with Q barrels and...
    Now: $90.00
    Was: $100.00
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    Q - Bottle Rocket Enhanced Muzzle Brake - BR-QUICKIE - 860248000442 - Boss Firearms - BossFirearms.com
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    Q LLC - Bottle Rocket Enhanced Muzzle Brake - BR-QUICKIE

    Q LLC

    Now: $89.00
    Was: $99.00
    The Q Bottle Rocket is an enhanced brake for use with our Cherry Bomb muzzle brake. On top of that, it also serves as a sexy-ass thread protector for your Cherry Bomb when not hosting a silencer.As...
    Now: $89.00
    Was: $99.00
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    Was: $99.00
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    LMT Defense M203 Rail Mounted Leaf Sight - LMP390A - 815415015798 - Boss Firearms - BossFirearms.com
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    LMT Defense - M203 Rail Mounted Leaf Sight

    LMT Defense

    Now: $243.90
    Was: $251.55
    LMT Defense M203 rail mounted leaf sight. This sight is used for the M203 40mm grenade launcher and is used to be mounted to either the grenade launcher itself or mounted to the firearm the granade...
    Now: $243.90
    Was: $251.55
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    Was: $251.55
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    LMT Defense - Semi Safety Selector - LMP092 - Boss Firearms - BossFirearms.com
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    LMT Defense - Semi Safety Selector - LMP092

    LMT Defense

    Now: $38.25
    Was: $42.50
    Lewis Machine & Tool semi safety selector switch.  The Lewis Machine and Tool AR-15 Safety Selector is built to Mil-Spec for compatibility with all lower receivers. Machined from steel and black...
    Now: $38.25
    Was: $42.50
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    Now: $38.25
    Was: $42.50
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