Parts & Accessories

Parts & Accessories

Shop AR-15 and AR-10 parts and accessories from Boss Firearms. Our parts inventory includes LMT upper and lower receivers, Proof Research carbon fiber barrels, Forward Controls Design components, Geissele triggers, Magpul furniture, BCM parts, SureFire lights, and much more. Whether you're building a new rifle or upgrading your current setup, we carry the hard-to-find components trusted by military, law enforcement, and serious civilian shooters.

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  • On Sale
    Unity Tactical Fast red dot riser. Elevates absolute co-witness to 2.26" Direct to Picatinny

    Unity Tactical Fast red dot riser. Elevates absolute co-witness to 2.26" Direct to Picatinny

    Unity Tactical

    MSRP: $105.00
    Now: $95.00
    Was: $105.00
    The Unity Tactical FAST Riser elevates absolute co-witness mounted red dots to 2.26" optical height (FST-ORAB) — designed for red dot sights mounted in absolute co-witness height rings/mounts that need to be raised to the Unity 2.26" FAST height standard...
    MSRP: $105.00
    Now: $95.00
    Was: $105.00
    Qty in Cart: 0
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    MSRP: $105.00
    Now: $95.00
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  • Proof Research - 20" 6.5 Creedmoor Carbon Fiber Barrel - 100042 - 843068100042 - Boss Firearms - BossFirearms.com Proof Research - 20" 6.5 Creedmoor Carbon Fiber Barrel - 100042 - 843068100042 - Boss Firearms - BossFirearms.com

    Proof Research 20" 6.5 Creedmoor Carbon Fiber Barrel

    Proof Research

    $1,250.00
    The Proof Research 20" 6.5 Creedmoor Carbon Fiber Barrel (100042) represents the pinnacle of precision barrel technology, combining an aerospace-grade carbon fiber wrap over a 416R stainless steel core using Proof Research's patented manufacturing...
    $1,250.00
    Qty in Cart: 0
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    $1,250.00
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  • Out of stock
    Volquartsen - Ruger MK Series Competition Bolt - VC4BT-B

    Volquartsen - Ruger MK Series Competition Bolt - VC4BT-B

    Volquartsen

    $288.00
    Are you a competitive shooter looking to eliminate stovepipes, failures to fire and improve the overall performance of your Ruger MKII, MKIII, or MK IV pistol? The Competition Bolt is the answer! CNC-machined and ground for superior fit and...
    $288.00
    Qty in Cart: 0
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    $288.00
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  • Volquartsen - TG2000 Ruger 10/22 drop in trigger - VCTP-1-B-10 - 840300701487 - Boss Firearms - BossFirearms.com

    Volquartsen - TG2000 Ruger 10/22 drop in trigger - VCTP-1-B-10

    Volquartsen

    MSRP: $296.00
    $279.00
    The Volquartsen TG2000 Ruger 10/22 Drop-In Trigger Group (VCTP-1-B-10) is Volquartsen's legendary drop-in trigger group for Ruger 10/22 rifles. The TG2000 is widely considered the finest aftermarket trigger upgrade for the 10/22 — transforming the...
    MSRP: $296.00
    $279.00
    Qty in Cart: 0
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    MSRP: $296.00
    $279.00
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  • Out of stock
    Volquartsen - Lightweight  Barrel for the Ruger 10/22 Charger - VF6-T

    Volquartsen - Lightweight Barrel for the Ruger 10/22 Charger - VF6-T

    Volquartsen

    MSRP: $368.00
    $355.00
    When you're going all out with a custom 22 Charger build, our VF-6 Barrel is the perfect complement for your aftermarket, stubby barrel chassis. Available in 6" & 9". Specs Note: this barrel is not intended for use with the factory 22 Charger...
    MSRP: $368.00
    $355.00
    Qty in Cart: 0
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    MSRP: $368.00
    $355.00
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  • On Sale
    Magpul - PMAG D-50 9mm 50rd. Drum Magazine HK94/MP5 - MAG1181-BLK - 840815132226 - Boss Firearms - BossFirearms.com

    Magpul - PMAG D-50 9mm 50rd. Drum Magazine HK94/MP5 - MAG1181-BLK

    Magpul Industries

    MSRP: $124.95
    Now: $118.70
    Was: $124.95
    The Magpul PMAG D-50 9mm 50-Round Drum Magazine for HK94/MP5 (MAG1181-BLK) is Magpul's 50-round polymer drum magazine designed specifically for HK94, MP5, and MP5-compatible firearms using the HK-style double-feed magazine well. The PMAG D-50 for HK/MP5...
    MSRP: $124.95
    Now: $118.70
    Was: $124.95
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    MSRP: $124.95
    Now: $118.70
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  • LMT Defense 7.62x51mm 16" LW Chrome Lined MWS Barrel Assembly - LM308B116 - 815415014937 - Boss Firearms

    LMT Defense - 7.62x51mm 16" LW Chrome Lined MWS Barrel Assembly - R-LM308B116

    LMT Defense

    MSRP: $784.00
    $727.20
    The LMT Defense 7.62×51mm 16" LW Chrome Lined MWS Barrel Assembly (R-LM308B116) is the lightweight version of LMT's standard 16" .308 MWS barrel, engineered to reduce overall rifle weight without sacrificing durability or performance. The lightweight...
    MSRP: $784.00
    $727.20
    Qty in Cart: 0
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    MSRP: $784.00
    $727.20
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  • AirTronic USA - MIL-SPEC Rifle Length M203 Handguard/Heatshield - Boss Firearms - BossFirearms.com AirTronic USA - MIL-SPEC Rifle Length M203 Handguard/Heatshield - Boss Firearms - BossFirearms.com

    AirTronic USA - MIL-SPEC Carbine Length M203 Handguard/Heatshield

    AirTronic USA

    $70.00
    This is a new AirTronic USA, mil-spec, carbine length, M203 handguard/heatshield. The internal is formed to conform to the contour of the barrel of an M16 rifle and the external is formed to a special shape. This item is new without a box. These...
    $70.00
    Qty in Cart: 0
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    $70.00
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  • Forward Controls Design - 3 Prong Flash Suppressor - #FCD-3P15 - 795847525112 - Boss Firearms - BossFirearms.com Forward Controls Design - 3 Prong Flash Suppressor - #FCD-3P15 - 795847525112 - Boss Firearms - BossFirearms.com

    Forward Controls Design - 3 Prong Flash Suppressor - FCD-3P15

    Forward Controls Design, Inc

    MSRP: $90.00
    $85.50
    The Forward Controls Design 3-Prong Flash Suppressor / Plan B Mount (FCD-3P15) is a multi-functional muzzle device designed in collaboration with Revival Defense — functioning as both a standalone 3-prong flash hider and a Plan B/Atlas compatible...
    MSRP: $90.00
    $85.50
    Qty in Cart: 0
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    MSRP: $90.00
    $85.50
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  • RICO MICRO PICTAIL Helmet/Weapon Shoe - AC52 - 850029093596 - Boss Firearms - BossFirearms.com

    iRayUSA - RICO MICRO PICTAIL Helmet/Weapon Shoe AC52

    iRayUSA

    $129.00
    The PICTAIL mounting system is the combination of a standard dovetail shoe commonly used on helmet mountable night vision optics and the MIL-STD-1913 picatinny rail used on weapons platforms. The synergy of these two mounting formats creates a system...
    $129.00
    Qty in Cart: 0
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    $129.00
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  • iRayUSA - RICO MICRO MQD Mount - AC36 - 850029093480 - Boss Firearms - BossFirearms.com iRayUSA - RICO MICRO MQD Mount - AC36 - 850029093480 - Boss Firearms - BossFirearms.com

    iRayUSA - RICO MICRO MQD Mount AC36

    iRayUSA

    $199.00
    iRayUSA partnered with American Defense Manufacturing to produce the PICTAIL and MQD delivering ADM's gold standard picatinny mounting solution with an innovative lighter and faster dovetail design for faster helmet transitions. The PICTAIL mounting...
    $199.00
    Qty in Cart: 0
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    $199.00
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  • Out of stock
    iRayUSA - RICO MICRO 640 12 Micron 25mm Multi-Purpose Monocular - RH25 - 850029093589 - Boss Firearms - BossFirearms.com iRayUSA - RICO MICRO 640 12 Micron 25mm Multi-Purpose Monocular - RH25 - 850029093589 - Boss Firearms - BossFirearms.com

    iRayUSA - RICO MICRO 640 12 Micron 25mm Multi-Purpose Monocular #RH25

    iRayUSA

    $3,999.00
    The RICO MICRO Series is an advanced electro-optic device miniaturized to deliver remarkably versatile functionality: Handheld, helmet mount, weapon mount, and clip-on. Weighing less than a pound, the MICRO will fit in the palm of your hand and can be...
    $3,999.00
    Qty in Cart: 0
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    $3,999.00
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