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The One Horse OH-UR02 is a stripped A3 flat-top upper receiver built to be the starting point for a custom AR15. It is forged from 7075-T6 aluminum, the same tough alloy called out in the mil-spec technical data package, so you are getting the harder, stronger material rather than the softer 6061 that sometimes shows up on bargain-bin receivers. The finish is a black Type III hardcoat anodizing that shrugs off wear and holds up to years of range time.
This one ships stripped, meaning no forward assist, dust cover, or barrel installed. That is exactly what most builders want since it lets you spec every component yourself. It comes cut for M4 feed ramps, which are the standard on modern carbine barrels and help with reliable feeding, and the flat-top A3 configuration gives you a continuous Picatinny rail up top for red dots, LPVOs, magnifiers, or backup irons. The .250 takedown pin holes are mil-spec, so pairing it with a standard lower is a non-issue.
Since this is a blank canvas, you will need an upper parts kit to add the forward assist and ejection port cover, plus your choice of barrel, gas system, and handguard. One Horse makes a matching lineup of parts including gas tubes, gas blocks, and their own free-float M-LOK handguards, so you can keep the whole build under one roof if you like. It also plays nice with parts from just about every other major AR15 maker.
Bottom line, if you are assembling an AR15 from the ground up or refreshing an older build, this is a clean, American-made receiver that does its job without adding cost you do not need. It is a dependable foundation you can trust to line up right and last.
No, this upper ships stripped, so it does not include a forward assist, ejection port dust cover, or barrel. You will need an upper parts kit to add those pieces. That is standard for a stripped receiver and gives you full control over which components you install.
Yes. It uses .250 mil-spec takedown pin holes and is built to mil-spec dimensions, so it mates up with any standard AR15 or M4-pattern lower receiver. You should not run into fitment surprises with a quality lower.
A3 refers to the flat-top configuration with a continuous Picatinny rail across the top. It replaced the older fixed carry handle design and is the universal mounting platform for red dots, scopes, magnifiers, and backup iron sights. It gives you the flexibility to run just about any optic you want.
Yes, it is cut with M4 feed ramps, which are the wider ramps found on modern carbine barrels. For the smoothest feeding, pair it with an M4-cut barrel extension so the ramps line up correctly. It is forged from 7075-T6 aluminum for strength and durability.
| UPC | 850078799043 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | OHUR02 |
| Color | Black |
| Shipping Weight | 0.594 |
| Style | Stripped |
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