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Rein in the Noise™ with One Horse Suppressors!
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One Horse AR-15 Parts
Built by One Horse.

AR-15 Parts

Complete uppers, barrels, BCGs, buffers and parts kits from One Horse, plus select optics, magazines and SUKON heat shields.

Shop PartsAR-15 Parts List
One Horse parts
Plus select partner brands
What’s here
Uppers · Barrels · BCGs · Buffers · Kits
AvailabilityIn-stock parts
In stock
One Horse AR-15 Parts · Shop the lineup

All AR-15 parts

Every part in one place for 5.56/.223 and .300 BLK builds. Sale prices shown.

  • A black polymer Thrill 5.56x45mm magazine for AR-style rifles, featuring a textured grip surface and Made in USA branding for reliable performance.
    Thril GEN 2 PMX AR Magazine

    SKU: PMX-G2-AR30-BLK

    In Stock

    $14.99

  • Collection of firearm parts including a black pistol grip, springs, and various metal components for assembly.Sale
    AR15 Lower Parts Kit

    SKU: OH-LPK01

    In Stock

    $49.99 MSRP $54.99

  • Black adjustable rifle stock assembly with buffer tube, spring, and related components for reliable firearm performance.
    AR-15 Carbine Buffer Tube Kit

    SKU: OH-BT01

    In Stock

    $29.99

  • A durable, American-made black steel bolt carrier group for an AR-style rifle, showcasing precision craftsmanship for reliable firearm performance.
    M16 Bolt Black Nitride BCG (5.56 / .300 BLK)

    SKU: OH-UBC01

    In Stock

    $89.99

  • Collection of firearm components including springs, pins, and small parts, showcasing quality craftsmanship and reliability.
    AR15 OH-SHYT KIT – Spare Springs, Detents & Pins

    SKU: OH-OS01

    In Stock

    $18.99

  • A durable, black polymer curved rifle magazine for American-made firearms, featuring a reliable design for consistent feeding and performance.
    25 RD .22LR Express Black Dog Magazine

    SKU: SW-25BL-NY

    In Stock

    $21.99

  • Close-up of a black rifle stock featuring textured grip and ventilation slots, showcasing durable craftsmanship.
    AR-15 Mil-Spec M4 Buttstock

    SKU: OH-BS01

    In Stock

    $24.99

  • Black charging handle for rifles, designed for reliability and ease of use, showcasing a sleek and durable finish.
    AR15 Charging Handle

    SKU: OH-UCH01

    In Stock

    $19.99

  • A black, American-made AR-15 complete upper receiver featuring a lightweight M-LOK handguard and a reliable barrel with a tactical muzzle device.Sale
    16" 5.56/.223 AR-15 Complete Upper

    SKU: OH-CU01

    In Stock

    $369.99 MSRP $399.99

  • A durable, American-made stainless steel gas tube for a rifle, featuring a precise curved design for reliable firearm operation and performance.
    Carbine-Length AR-15 Gas Tube

    SKU: OH-GT02

    In Stock

    $15.99

  • Close-up of a durable black upper receiver for AR-style rifles, showcasing precision machining and a Picatinny rail.
    AR15 Stripped Upper Receiver

    SKU: OH-UR02

    $79.99
  • A black leather rifle cheek riser featuring the One Horse logo, durable stitching, and adjustable cord lacing for a secure, reliable firearm fit.
    Heat Shield - Black

    SKU: 6-M1-BLK-R

    In Stock

    $44.99

  • One Horse H3 AR-15 buffer (5.6 oz) shown next to its red H3 Buffer retail packageSale
    AR-15 H3 Buffer 5.6 oz.

    SKU: OH-BWH3

    In Stock

    $89.99 MSRP $99.99

  • Black rifle upper receiver with a sleek design, featuring a rail system and precision craftsmanship.Sale
    10.5" 5.56 AR-15 Complete Upper

    SKU: OH-CU02

    In Stock

    $349.99 MSRP $379.99

  • One Horse H2 AR-15 buffer (4.7 oz) shown next to its red H2 Buffer retail packageSale
    AR-15 H2 Buffer 4.7 oz.

    SKU: OH-BWH2

    In Stock

    $49.99 MSRP $59.99

  • Compact black reflex sight with an orange lens, featuring adjustable brightness and a durable design for reliable performance.Sale
    Vortex Crossfire II 2 MOA Red Dot

    SKU: CF2-RD2

    In Stock

    $199.99 MSRP $219.99

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