Build it yourself.
The One Horse way.

P a r t s

At One Horse, we offer premium-quality, U.S.-made parts to help you assemble reliable,
precision-crafted firearms. Sourced exclusively from trusted American manufacturers,
our components ensure durability and performance for every custom build.

2
16″ 5.56 HBAR Complete Upper Receiver – 15″ M-Lok Handguard, Nitride BCG & Charging Handle
SKU- OH-CU08
MSRP: Original price was: $329.99.Current price is: $299.99.
SHOP NOW
OH-CU09-1-1-1
18″ 6mm ARC Complete Upper Receiver – 15″ M-Lok Handguard, Nitride BCG & Charging Handle
SKU- OH-CU09
MSRP: $499.99
SHOP NOW
67mm-AR-15-Utility-Can-Launcher-Black-2
Can Launcher Kit | 67mm AR-15 Utility Launcher + Golf Ball Adapter
SKU-
MSRP: Original price was: $299.99.Current price is: $199.99.
SHOP NOW
2
16″ .300 BLK Complete Upper Receiver – 15″ M-Lok Free-Float Handguard, Nitride BCG & Charging Handle
SKU- OH-CU04
MSRP: Original price was: $329.99.Current price is: $299.99.
SHOP NOW
OH_UR02_R
AR15 Stripped Upper Receiver
SKU- OH-UR02
MSRP: $59.99
SHOP NOW
10.5 Pistol Gas 300 Blackout 1-7 Twist
10.5″ Pistol Gas Barrel – .300 Blackout, 1:7 Twist, Nitride Finish
SKU- OH-BR06
MSRP: Original price was: $89.99.Current price is: $79.99.
SHOP NOW
7.5 5.56 NATO Barrel 1-7 Twist
7.5″ Pistol Gas Barrel – 5.56 NATO, 1:7 Twist, Nitride Finish
SKU- OH-BR07
MSRP: Original price was: $74.99.Current price is: $69.99.
SHOP NOW
7.5300
7.5″ Pistol Gas Barrel – .300 Blackout, 1:7 Twist, Nitride Finish
SKU- OH-BR08
MSRP: Original price was: $74.99.Current price is: $69.99.
SHOP NOW
More Products
2
16″ 5.56 HBAR Complete Upper Receiver – 15″ M-Lok Handguard, Nitride BCG & Charging Handle
SKU- OH-CU08
MSRP: Original price was: $329.99.Current price is: $299.99.
SHOP NOW
OH-CU09-1-1-1
18″ 6mm ARC Complete Upper Receiver – 15″ M-Lok Handguard, Nitride BCG & Charging Handle
SKU- OH-CU09
MSRP: $499.99
SHOP NOW
2
16″ .300 BLK Complete Upper Receiver – 15″ M-Lok Free-Float Handguard, Nitride BCG & Charging Handle
SKU- OH-CU04
MSRP: Original price was: $329.99.Current price is: $299.99.
SHOP NOW
OH-CU02-3
10.5″ 5.56 NATO Complete Upper Receiver – 10″ M-Lok Rail, Nitride BCG & Charging Handle
SKU- OH-CU02
MSRP: Original price was: $319.99.Current price is: $299.99.
SHOP NOW
OH-CU06-3
7.5″ 5.56 NATO Complete Upper Receiver – 7″ M-Lok Handguard, Nitride BCG & Charging Handle
SKU- OH-CU03
MSRP: Original price was: $315.99.Current price is: $299.99.
SHOP NOW
OH-CU02-3
10.5″ .300 Blackout Complete Upper Receiver – 10″ M-Lok Handguard, Nitride BCG & Charging Handle
SKU- OH-CU05
MSRP: Original price was: $319.99.Current price is: $299.00.
SHOP NOW
OH-CU06-3
7.5″ .300 Blackout Complete Upper Receiver – 7″ M-Lok Handguard, Nitride BCG & Charging Handle
SKU- OH-CU06
MSRP: Original price was: $315.99.Current price is: $299.99.
SHOP NOW
2
16″ 5.56 NATO Complete Upper Receiver – 15″ M-Lok Free-Float Handguard, Nitride BCG & Charging Handle
SKU- OH-CU01
MSRP: Original price was: $329.99.Current price is: $299.99.
SHOP NOW
More Products
OH_UR02_R
AR15 Stripped Upper Receiver
SKU- OH-UR02
MSRP: $59.99
SHOP NOW
a39
9″ M-Lok Handguard
SKU-
MSRP: $56.99
SHOP NOW
OH-HG03-1
7″ M-Lok Handguard
SKU- OH-HG03
MSRP: $54.99
SHOP NOW
ChatGPT Image Nov 5, 2025, 01_28_29 PM
Carbine-Length Gas Tube
SKU- OH-GT02
MSRP: $15.99
SHOP NOW
UP-046_AR-10_Nickel_Boron_Bolt_Carrier_Group__52507__35148.1710330571-1171485142
Mil-Spec Nickel Boron M16 Bolt Carrier Group — 5.56 / .300 Blackout
SKU- OH-UBC02
MSRP: Original price was: $129.99.Current price is: $99.99.
SHOP NOW
OH_FH01_FH02
30 Cal A2 Bird Cage Flash Hider – 5/8-24 Thread, Crush Washer Included
SKU- OH-FH02
MSRP: $16.99
SHOP NOW
OH_FH01_FH02
5.56 NATO A2 Bird Cage Flash Hider – 1/2-28 Thread, Crush Washer Included
SKU- OH-FH01
MSRP: $15.99
SHOP NOW
OH_GB01_Front
.750″ Low Profile Steel Gas Block
SKU- OH-GB01
MSRP: $24.99
SHOP NOW
More Products
OH-LR02_L
AR15 Mil-Spec Lower Receiver
SKU- OH-LR02
MSRP: $69.99
SHOP NOW
OH_BS01_RQ
AR15 Mil-Spec M4 Buttstock
SKU- OH-BS01
MSRP: $24.99
SHOP NOW
OH_OS01
AR15 OH-SHYT KIT – Spare Springs, Detents & Pins
SKU- OH-OS01
MSRP: $18.99
SHOP NOW
OH_BT01
AR15 Buffer Tube Kit
SKU- OH-BT01
MSRP: $29.99
SHOP NOW
OH_LPK01
AR15 Lower Parts Kit
SKU- OH-LPK01
MSRP: $54.99
SHOP NOW
More Products
10.5 Pistol Gas 300 Blackout 1-7 Twist
10.5″ Pistol Gas Barrel – .300 Blackout, 1:7 Twist, Nitride Finish
SKU- OH-BR06
MSRP: Original price was: $89.99.Current price is: $79.99.
SHOP NOW
7.5 5.56 NATO Barrel 1-7 Twist
7.5″ Pistol Gas Barrel – 5.56 NATO, 1:7 Twist, Nitride Finish
SKU- OH-BR07
MSRP: Original price was: $74.99.Current price is: $69.99.
SHOP NOW
7.5300
7.5″ Pistol Gas Barrel – .300 Blackout, 1:7 Twist, Nitride Finish
SKU- OH-BR08
MSRP: Original price was: $74.99.Current price is: $69.99.
SHOP NOW
10.5″ Carbine Gas Barrel – 5.56 NATO, 1:7 Twist, Nitride Finish – Drew Markel Site
10.5″ Carbine Gas Barrel – 5.56 NATO, 1:7 Twist, Nitride Finish
SKU- OH-BR05
MSRP: $76.99
SHOP NOW
300-16-Pistol-2
16″ Pistol Gas Barrel – .300 Blackout, 1:7 Twist, Nitride Finish
SKU- OH-BR04
MSRP: $89.99
SHOP NOW
16″ SOCOM Barrel – 5.56 NATO, 1:8 Twist, Mid-Length Gas
16″ Mid-Length Gas – SOCOM Barrel 5.56 NATO 1:8 Twist
SKU- OH-BR03
MSRP: $89.99
SHOP NOW
m4m4m4m4
16″ Carbine Gas – M4 Nitride Barrel 5.56 NATO 1:7 Twist
SKU- OH-BR01
MSRP: $89.99
SHOP NOW
More Products
OH_OS01
AR15 OH-SHYT KIT – Spare Springs, Detents & Pins
SKU- OH-OS01
MSRP: $18.99
SHOP NOW
OH_BT01
AR15 Buffer Tube Kit
SKU- OH-BT01
MSRP: $29.99
SHOP NOW
OH_LPK01
AR15 Lower Parts Kit
SKU- OH-LPK01
MSRP: $54.99
SHOP NOW
OH_UPK01
Complete AR15 Upper Parts Kit
SKU- OH-UPK01
MSRP: $19.99
SHOP NOW
More Products

Product Finder

Product Search
Product Price Range
Price Range - slider
$ 12 — $ 5000
Product Category
Checkbox Category
Join Our One Horse Waitlist We will inform you when your One Horse product is back in stock!
Logo-scaled.webp

Direct Online Ordering is Coming Soon

Until then, reach out to place an order with our team

Contact Us to Order
Logo

Age verification required

You must be 18 or older to access this site.

I am 18 or older
I am Under 18

Warning: Cookie-based verification only