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Best-Selling Firearm Parts collection

Best-Selling Firearm Parts

(1048 products)

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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  • Die Free Co Kung Fu Grip color lineup in Black, Flat Dark Earth, Olive Drab Green, and Gray Black Die Free Co Kung Fu Grip in retail packaging
    Up to 10% off

    Die Free Co (DFCO)

    Die Free Co Kung Fu Pistol Grip - Mil-Spec AR Platforms

    (24)

    4 colors available

    20 available
    $18.00 USD $20.00
    View details
  • Die Free Co Tiger Claw M-LOK angled indexer color lineup Black Die Free Co Tiger Claw M-LOK angled indexer
    Up to 10% off

    Die Free Co (DFCO)

    Die Free Co Tiger Claw M-LOK Angled Indexer

    (11)

    4 colors available

    6 available
    $18.00 USD $20.00
    View details
  • Die Free Co PLUG grip extension and storage core DFCO PLUG showing internal battery and tool storage compartments
    10% off

    Die Free Co (DFCO)

    Die Free Co PLUG Grip Extension and Storage Core

    (7)
    71 available
    $10.80 USD $12.00
    View details
  • BCM GUNFIGHTER Vertical Grip Mod 3 - M-LOK – Black BCM GUNFIGHTER Vertical Grip Mod 3 - M-LOK – Flat Dark Earth — alternate view 2

    Bravo Company Manufacturing (BCM)

    BCM Gunfighter Vertical Grip Mod 3 - M-LOK

    (4)

    2 colors available

    7 available
    $19.95 USD
    View details
  • Black Die Free Co Dos Boot +2 PMAG GEN M3 baseplate, angled view Coyote Brown Die Free Co Dos Boot +2 PMAG GEN M3 baseplate, angled view

    Die Free Co (DFCO)

    Die Free Co Dos Boot +2 Baseplate 3-Pack for Magpul PMAG Gen M3

    (7)

    3 colors available

    14 available
    $18.00 USD
    View details
  • M-LOK Rail Covers – Retro & Old Glory Design – 2 Colors Available – Black M-LOK Rail Covers – Retro & Old Glory Design – 2 Colors Available – Black — alternate view 2

    AT3 Tactical

    AT3 M-LOK Rail Covers - Retro & Old Glory Designs

    (2)

    2 colors available

    Low stock (2 available)
    From $4.99 USD
    View details
  • Strike Industries LINK Anchor Polymer Hand Stop Strike Industries LINK Anchor Polymer Hand Stop - FDE

    Strike Industries

    Strike Industries LINK Anchor Polymer Hand Stop

    (4)

    2 colors available

    5 available
    $12.95 USD
    View details
  • Bravo Company BCM Gunfighter Kinesthetic Angled Grip (KAG), MLOK Compatible, Black BCM Gunfighter KAG M-LOK Angled Grip in Flat Dark Earth, alternate view 2

    Bravo Company Manufacturing (BCM)

    BCM Gunfighter KAG M-LOK Angled Grip

    (1)

    2 colors available

    Very low stock (1 available)
    $19.95 USD
    View details
  • Mil Spec AR-15 Buffer Tube – 10 Colors Available – Black Mil Spec AR-15 Buffer Tube – 10 Colors Available – Flat Dark Earth — alternate view 2

    AT3 Tactical

    AT3 Mil-Spec AR-15 Carbine Buffer Tube

    (1)

    9 colors available

    Restocking soon
    From $17.99 USD
    View details
  • AR-15 M-LOK Angled Foregrip – Available in 10 Colors – Black AR-15 M-LOK Angled Foregrip – Available in 10 Colors – Flat Dark Earth — alternate view 2

    AT3 Tactical

    AT3 M-LOK Angled Foregrip

    (2)

    9 colors available

    Low stock (2 available)
    From $39.99 USD
    View details
  • B5 Systems Vertical M-LOK Dual Angle Grip in Black B5 Systems Vertical M-LOK Dual Angle Grip in Flat Dark Earth, alternate view 2

    B5 Systems

    B5 Systems Vertical M-LOK Dual Angle Grip

    8 colors available

    Very low stock (1 available)
    From $19.00 USD
    View details
  • Bravo Company Manufacturing 5.5" M-LOK Rail Panel Kit - 5 Pack – Black Bravo Company Manufacturing 5.5" M-LOK Rail Panel Kit - 5 Pack – Flat Dark Earth — alternate view 2

    Bravo Company Manufacturing (BCM)

    BCM 5.5 Inch M-LOK Rail Cover Panel Kit - 5 Pack

    (2)

    2 colors available

    4 available
    $9.95 USD
    View details
  • Guntec USA AR-15/LR-308 Extended Mag Catch Release – Black Guntec USA AR-15/LR-308 Extended Mag Catch Release – Flat Dark Earth — alternate view 2

    Guntec USA

    Guntec Extended Mag Catch Release for AR-15, T15 & T16

    12 colors available

    Low stock (2 available)
    From $18.95 USD
    View details
  • Black Die Free Co Full Stop M-LOK hand and barricade stop Flat Dark Earth Die Free Co Full Stop M-LOK hand and barricade stop

    Die Free Co (DFCO)

    Die Free Co Full Stop M-LOK Hand Stop and Barricade Stop

    (4)

    4 colors available

    Low stock (2 available)
    $40.00 USD
    View details
  • BCM Gunfighter Mod 3 Vertical Grip - Picatinny in Black BCM Gunfighter Mod 3 Vertical Grip - Picatinny in Flat Dark Earth, alternate view 2

    Bravo Company Manufacturing (BCM)

    BCM Gunfighter Mod 3 Vertical Grip - Picatinny

    2 colors available

    4 available
    $21.95 USD
    View details
  • B5 Systems Type 23 AR Pistol Grip in Black B5 Systems Type 23 AR Pistol Grip in Gray, alternate view 2

    B5 Systems

    B5 Systems Type 23 AR Pistol Grip

    (1)

    8 colors available

    Low stock (2 available)
    From $19.00 USD
    View details
  • AT3™ Castle Nut for AR-15 Buffer Tubes - 9 Colors Available – Black AT3™ Castle Nut for AR-15 Buffer Tubes - 9 Colors Available – Red — alternate view 2

    AT3 Tactical

    AT3 Castle Nut for AR-15 Buffer Tubes

    (1)

    9 colors available

    17 available
    From $5.99 USD
    View details
  • Strike Industries Ambidextrous Magazine Release - Black Strike Industries Ambidextrous AR-15 Magazine Release in Flat Dark Earth, alternate view 2

    Strike Industries

    Strike Industries Ambidextrous Magazine Release for AR-15, T15 & T16

    (1)

    4 colors available

    Very low stock (1 available)
    From $37.95 USD
    View details
  • SB Tactical SBA3 AR Pistol Stabilizing Brace / - No Receiver Extension – Black SB Tactical SBA3 AR Pistol Stabilizing Brace / - No Receiver Extension – Olive Drab — alternate view 2

    SB Tactical

    SB Tactical SBA3 AR Pistol Stabilizing Brace - No Receiver Extension

    (1)

    4 colors available

    Low stock (2 available)
    $99.99 USD
    View details
  • STNGR HWK® M-LOK Free Float AR-15 Handguard – Black STNGR HWK® M-LOK Free Float AR-15 Handguard – Black — alternate view 2

    STNGR

    STNGR HWK M-LOK Free Float AR-15 Handguard

    (1)

    3 colors available

    Very low stock (1 available)
    From $149.99 USD
    View details
  • Planet Eclipse EMC Adjustable Tank Stock Planet Eclipse EMC Adjustable Tank Stock in Flat Dark Earth, alternate view 2

    Planet Eclipse

    Planet Eclipse EMC Adjustable Tank Stock

    (2)

    2 colors available

    5 available
    $49.95 USD
    View details
  • BCM Gunfighter Short Vertical Grip - Picatinny in Black BCM Gunfighter Short Vertical Grip - Picatinny in Flat Dark Earth, alternate view 2

    Bravo Company Manufacturing (BCM)

    BCM Gunfighter Short Vertical Grip - Picatinny

    2 colors available

    Very low stock (1 available)
    $39.95 USD
    View details
  • Strike Industries Angled Vertical Grip With Cable Management - Short – Black Strike Industries Angled Vertical Grip With Cable Management - Short – Flat Dark Earth — alternate view 2

    Strike Industries

    Strike Industries Angled Vertical Grip With Cable Management - Short

    2 colors available

    6 available
    From $18.95 USD
    View details
  • 10" "Tone" M-Lok Crescent Slant-Pro Handguard W/Anti-Rotation Tabs Crescent Slant-Pro M-LOK Handguard w/ Anti-Rotation Tabs - Tone, Buffalo, Mohawk, Javelin, Narval (7", 10", 12", 13.5", 15")

    Gauntlet Arms

    Crescent Slant-Pro M-LOK Handguard w/ Anti-Rotation Tabs — Tone, Buffalo, Mohawk, Javelin, Narval (7", 10", 12", 13.5", 15")

    (4)
    Low stock (3 available)
    From $34.99 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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