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Best-Selling Firearm Parts

(📦 864 products available)

Shop best-selling firearm parts and accessories at HR Tactical Innovations. Compare popular AR-platform components, grips, stocks, controls, optics, tools, and compatible upgrades ranked by store sales.

Popularity does not guarantee compatibility. Confirm firearm platform, caliber, dimensions, fitment, manufacturer specifications, and all applicable laws before ordering or installation.

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  • Guntec USA Ultra Lightweight M-LOK Free Float Handguard, 4-inch Black Guntec USA Ultra Lightweight M-LOK Free Float Handguard, Black detail view

    Guntec USA

    Ultra Lightweight M-LOK Free Float Handguard

    🎨 14 colors available

    From $74.95 USD
    View details
  • Holosun AEMS PRO X2 red multi-reticle enclosed reflex sight Holosun AEMS PRO X2 red multi-reticle enclosed reflex sight

    Holosun

    Holosun AEMS PRO X2 Red Multi-Reticle Sight

    On demand
    $399.99 USD
    View details
  • BCM Gunfighter Mod 1 SOPMOD Stock Assembly - Mil-Spec in Black BCM Gunfighter Mod 1 SOPMOD Stock Assembly - Mil-Spec in Flat Dark Earth, alternate view 2

    Bravo Company Manufacturing (BCM)

    BCM Gunfighter Mod 1 SOPMOD Stock Assembly - Mil-Spec

    🎨 2 colors available

    $74.95 USD
    View details
  • Guntec Airlite Series Skeletonized Aluminum Pistol Grip Guntec Airlite Series Skeletonized Aluminum Pistol Grip — alternate view 2

    Guntec USA

    Guntec Airlite Series Skeletonized Aluminum Pistol Grip

    🎨 2 colors available

    $64.95 USD
    View details
  • AR-15 Enhanced Trigger Guard (Matte Rainbow PVD Coated) AR-15 Enhanced Trigger Guard (Matte Rainbow PVD Coated) — alternate view 2

    Guntec USA

    Guntec AR-15 Enhanced Trigger Guard - Matte Rainbow PVD

    Very low stock (1 available)
    $29.99 USD
    View details
  • AR-15 Mag Catch Lever (Matte Rainbow PVD Coated) AR-15 Mag Catch Lever (Matte Rainbow PVD Coated) — alternate view 2

    Guntec USA

    Guntec Mag Catch Lever for AR-15, T15 & T16 - Matte Rainbow PVD

    Very low stock (1 available)
    $24.95 USD
    View details
  • Ultra Lightweight M-LOK Handguard – 7" & 15" Matte Rainbow PVD (Monolithic Rail) – 7" Ultra Lightweight M-LOK Handguard – 7" & 15" Matte Rainbow PVD (Monolithic Rail) – 15" — alternate view 2

    Guntec USA

    Guntec Ultra Lightweight M-LOK Handguard - Matte Rainbow PVD

    From $149.00 USD
    View details
  • VISM AR-15 M4 Polymer Pistol Grip With Bottom Storage Compartment – Black VISM AR-15 M4 Polymer Pistol Grip With Bottom Storage Compartment – Flat Dark Earth — alternate view 2

    NcSTAR

    VISM AR-15/M4 Polymer Pistol Grip with Storage

    🎨 2 colors available

    $18.99 USD
    View details
  • Primary Arms Mini Reflex 12 O'Clock Mount For PAO MicroPrisms™ - Black Primary Arms Mini Reflex 12 O'Clock Mount For PAO MicroPrisms™ - Black — alternate view 2

    Primary Arms

    Primary Arms Mini Reflex 12 O'Clock Mount for PAO MicroPrisms - Black

    On demand
    $31.99 USD
    View details
  • Davidson Defense "Avalon" 15" AR-15 M-LOK Handguard Davidson Defense "Avalon" 15" AR-15 M-LOK Handguard — alternate view 2

    Davidson Defense

    Davidson Defense Avalon 15" AR-15 M-LOK Handguard

    On demand
    $62.99 USD
    View details
  • Davidson Defense AR-15 M-Lok Free Float Handguard 15" Length with Barrel Nut Made in USA
    Sold out

    Davidson Defense

    Davidson Defense AR-15 15" M-LOK Free Float Handguard with Barrel Nut

    $52.99 USD
    View details
  • Holosun 407K-X2 Pistol Green Dot Sight - 6 MOA Holosun 407K-X2 Pistol Green Dot Sight - 6 MOA — alternate view 2

    Holosun

    Holosun 407K X2 6 MOA Green Dot Sight

    On demand
    $239.99 USD
    View details
  • SLx Advanced Push Button Micro Red Dot Sight - Gen II SLx Advanced Push Button Micro Red Dot Sight - Gen II — alternate view 2
    Sold out

    Primary Arms

    Primary Arms SLx Advanced Push Button Micro Red Dot Sight - Gen II

    $149.99 USD
    View details
  • HS503CU 2 MOA Circle Red Dot Sight HS503CU 2 MOA Circle Red Dot Sight — alternate view 2
    Sold out

    Holosun

    Holosun HS503CU 2 MOA Circle Red Dot Sight

    $306.99 USD
    View details
  • Paralow HS503G Red Dot Sight - ACSS CQB Reticle Paralow HS503G Red Dot Sight - ACSS CQB Reticle — alternate view 2
    Sold out

    Holosun

    Holosun/Primary Arms HS503G Red Dot Sight - ACSS CQB Reticle

    $249.99 USD
    View details
  • Holosun HS515GM red Multi-Reticle QD rifle sight

    Holosun

    Holosun HS515GM Red Multi-Reticle QD Sight

    On demand
    $319.99 USD
    View details
  • Sub-Compact Red Laser Sight, Solid/Strobe Mode, Integral Mount Sub-Compact Red Laser Sight, Solid/Strobe Mode, Integral Mount — alternate view 2

    Leapers UTG

    Sub-Compact Red Laser Sight with Solid/Strobe Mode

    Very low stock (1 available)
    $39.99 USD
    View details
  • Tactical RCO Riser Mount for Trijicon MRO Pattern Optics Tactical RCO Riser Mount for Trijicon MRO Pattern Optics — alternate view 2

    AT3 Tactical

    AT3 RCO Riser Mount for Trijicon MRO Pattern Optics

    Very low stock (1 available)
    $36.99 USD
    View details
  • RCO + DELTA Red Dot Kit – Includes Red Dot Sight & 3x Magnifier RCO + DELTA Red Dot Kit – Includes Red Dot Sight & 3x Magnifier — alternate view 2

    AT3 Tactical

    AT3 RCO and DELTA Red Dot/Magnifier Kit

    On demand
    $310.49 USD
    View details
  • Ghost Ring Sight/UMP Front Sight, Weaver Style Mount

    Lapco Paintball

    Ghost Ring UMP Front Sight - Weaver Mount

    Low stock (2 available)
    $42.99 USD
    View details
  • Omega Deals Stock and Pistol Grip Furniture Set: Featuring Adaptive Tactical + Magpul
    Sold out

    Omega Tactical

    Omega Deals Adaptive Tactical Stock + Magpul Grip Furniture Set

    $44.99 USD
    View details
  • EMF/MG100 NEW Slimbody – With EMF/MG100 NEW Slimbody – With — alternate view 2

    Styrian Custom Paintball

    Styrian Custom Paintball EMF/MG100 NEW Slimbody

    From $250.00 USD
    View details
  • JE Machine AR-15 Pistol Length Buffer Tube Fluted Type 2 With One Deep Flute And Multiple Flat Flutes - USA Made
    Sold out

    JE Machine

    JE Machine Fluted Pistol Buffer Tube Type 2

    $24.99 USD
    View details
  • Accessorize Your Build: JE Machine Quick Adjust Convertible 1 or 2 Point Sling with Metal Hooks - Black + Bravo Company, MLOK Rail QD Sling Mount - Black
    Sold out

    Omega Tactical

    JE Machine Convertible Sling + BCM M-LOK QD Sling Mount Bundle

    $24.99 USD
    View details

Best-Selling Firearm Parts & Accessories

Popular firearm parts, AR components, controls, optics, tools, and compatible accessories ranked by sales.

Use this collection to compare best-selling products specifically classified as Firearm Parts. Shopify ranks eligible components, controls, grips, stocks, optics, tools, and compatible accessories by store sales.

Sales rank can help identify popular options, but it does not confirm fitment. Review the product page and manufacturer specifications before ordering or installation.

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