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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  • Q - QSERT Handguard for The Fix by Q - Clear Anodized Gray Finish 7" - Boss Firearms - BossFirearms.com Q - QSERT Handguard for The Fix by Q - Clear Anodized Gray Finish 11" - Boss Firearms - BossFirearms.com
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    Q LLC - QSERT Handguard for The Fix by Q - Clear Anodized Gray Finish QSERT HANDGUARD

    Q LLC

    $300.00
    Enhance your Q Fix rifle with the Q QSERT Handguard, designed for optimal performance and customization. Crafted from lightweight yet durable 6061-T6 Aluminum, this handguard is a testament to Q's...
    $300.00
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    $300.00
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  • CMMG AR15 223/5.56mm Complete Lower Parts Kit - Boss Firearms - 55CA6C5
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    CMMG AR15 223/5.56mm Complete Lower Parts Kit 55CA6C5

    CMMG

    $69.95
      All the parts you need to get started on your next AR15 build. Combine this kit with a buttstock kit to complete your lower group. All parts meet or exceed mil-spec
    $69.95
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  • Sig Sauer - Polymer 9mm Magazine for MPX - 35 Rounds - 8901025 - 798681666997 - Boss Firearms - BossFirearms.com Sig Sauer - Polymer 9mm Magazine for MPX - 35 Rounds - 8901025 - 798681666997 - Boss Firearms - BossFirearms.com
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    Sig Sauer - Polymer 9mm Magazine for MPX - 35 Rounds - 8901025

    Sig Sauer

    $49.99
    The Sig Sauer MPX 9mm 35-Round Polymer Magazine (8901025) is a factory-original, high-capacity magazine for the Sig Sauer MPX pistol-caliber carbine and pistol system. This 35-round polymer magazine...
    $49.99
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    BT Atlas - Atlas M-LOK Adapter - BT70 - Boss Firearms - BossFirearms.com BT Atlas - Atlas M-LOK Adapter - BT70 - Boss Firearms - BossFirearms.com
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    BT Atlas - Atlas M-LOK Adapter - #BT70

    BT Atlas

    Now: $34.95
    Was: $49.95
    The BT70 Atlas M-LOK® Adapter is an interface between all Atlas bipods with the “NC” designator in their names (BT10-NC, BT46-NC, BT47-NC, BT35-NC, BT65-NC, BT69-NC, BT72-NC) and M-LOK style mounting...
    Now: $34.95
    Was: $49.95
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  • LMT Defense - AR10 Lower MARS-H Complete - LM308AM Code "LMT20" at Checkout for 20% Off LMT Defense - AR-10 Lower MARS-H Complete - #LM308AM - 815415016481 - Boss Firearms
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    LMT Defense - AR10 Lower MARS-H Complete - LM308AM Code "LMT20" at Checkout for 20% Off

    LMT Defense

    MSRP: $1,470.00
    $1,363.50
    Use Code "LMT20" at Checkout to Save 20%  The LMT Defense MARS-H SOPMOD Complete AR10 Lower Receiver (LM308AM) brings LMT's award-winning Modular Ambidextrous Rifle System to the large-frame .308/7...
    MSRP: $1,470.00
    $1,363.50
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    MSRP: $1,470.00
    $1,363.50
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    Knight's Armament - 5.56mm Enhanced Compensator Kit - #133001 - 819064018797 - Boss Firearms - BossFirearms.com
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    Knight's Armament - 5.56mm Enhanced Compensator Kit - #133001

    Knights Armament Company

    Now: $591.38
    Was: $622.50
    NEW 3D Printed version of the original.The KAC 5.56 Enhanced Compensator Kit also known as the "Triple Tap" or "3T" has been engineered to increase controllability, to significantly reduce felt...
    Now: $591.38
    Was: $622.50
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    Was: $622.50
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    Aimpoint - 6XMAG-1 Magnifier 39MM FlipMount and TwistMount Base - #200340 - 7350004385416 - Boss Firearms - BossFirearms.com Aimpoint - 6XMAG-1 Magnifier 39MM FlipMount and TwistMount Base - #200340 - 7350004385416 - Boss Firearms - BossFirearms.com
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    Aimpoint - 6XMAG-1 Magnifier 39MM FlipMount and TwistMount Base - #200340

    Aimpoint

    MSRP: $1,604.00
    Now: $1,443.00
    Was: $1,604.00
    The Aimpoint 6X Magnifier is your go-to solution for extended-range aiming and observation when used with Aimpoint Micro T-2/H-2 and Aimpoint CompM5/M5s/M5b red dot sights. This versatile optical...
    MSRP: $1,604.00
    Now: $1,443.00
    Was: $1,604.00
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    Now: $1,443.00
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    Aimpoint - 3XMAG-1 Magnifier 39MM FlipMount And TwistMount Base - #200334 - 7350004385355 - Boss Firearms - BossFirearms.com Aimpoint - 3XMAG-1 Magnifier 39MM FlipMount And TwistMount Base - #200334 - 7350004385355 - Boss Firearms - BossFirearms.com
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    Aimpoint - 3XMAG-1 Magnifier 39MM FlipMount And TwistMount Base - 200334

    Aimpoint

    Now: $1,441.00
    Was: $1,601.00
    The Aimpoint 3XMag-1 Magnifier is a powerful 3x magnifying module designed to meet the demands of professional end-users. This magnifier can be paired with an Aimpoint red dot sight to enhance target...
    Now: $1,441.00
    Was: $1,601.00
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    Now: $1,441.00
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  • On Sale
    Aimpoint - TwistMount Ring & Base - #12234 - 7350004382705 - Boss Firearms - BossFirearms.com Aimpoint - TwistMount Ring & Base - #12234 - 7350004382705 - Boss Firearms - BossFirearms.com
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    Aimpoint - TwistMount Ring & Base - 12234

    Aimpoint

    Now: $235.00
    Was: $261.00
    TwistMount Ring & Base: Complete Quick Release Mount for all Aimpoint® magnifiers and CEU. Fits on Picatinny rail (MIL-STD 1913). Screws and Allen key included. This Aimpoint Red Dot Sight...
    Now: $235.00
    Was: $261.00
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    Was: $261.00
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    Aimpoint Micro T-2 Red Dot Reflex Sight #200180 - 2MOA, No Mount Aimpoint Micro T-2 Red Dot Reflex Sight #200180 - 2MOA, No Mount
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    Aimpoint Micro T-2 Red Dot Reflex Sight #200180 - 2MOA, No Mount

    Aimpoint

    Now: $923.00
    Was: $1,026.00
    The Aimpoint® Micro T-2 red dot 
    Now: $923.00
    Was: $1,026.00
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    Now: $923.00
    Was: $1,026.00
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  • Aimpoint - Micro T-2 Red Dot Optic - #200198 - 7350004384648 - Boss Firearms - BossFirearms.com Aimpoint - Micro T-2 Red Dot Optic - #200198 - 7350004384648 - Boss Firearms - BossFirearms.com
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    Aimpoint - Micro T-2 Red Dot Optic - 200198

    Aimpoint

    $1,108.00
    Meet the Aimpoint Micro T-2 Red Dot Optic – your ultimate companion for rugged, lightweight, and compact sighting needs. Crafted for demanding users, this optic boasts exceptional optical clarity and...
    $1,108.00
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    Midwest Industries HANDGUARD 308 COMBAT RAIL 12.625" DPMS HIGH MLOK SR25 - MI-CR308-12.625 - 812102033172- Boss Firearms - BossFirearms.com
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    Midwest Industries HANDGUARD 308 COMBAT RAIL 12.625" DPMS HIGH MLOK SR25 #MI-CR308-12.625

    Midwest Industries

    Now: $189.95
    Was: $199.95
    Looking to take your DPMS-pattern AR .308 rifle to the next level? This enhanced Combat Rail M-LOK Handguard from Midwest Industries is purpose-built to provide added versatility and durability to...
    Now: $189.95
    Was: $199.95
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    Now: $189.95
    Was: $199.95
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