Two 10.5″ complete uppers built on the same spec: medium-profile 4150 barrel, 1:7 twist, pistol-length gas and a 10″ free-float M-LOK handguard, with the BCG and charging handle installed.
SKU OH-CU02 · OH-CU05
Same build with a 5/8×24 thread.
10.5″ .300 BLK AR-15 Complete Upper.300 BLK · 5/8×24 · 10″ M-LOK$349.99 MSRP 10.5″ .300 BLK AR-15 Complete Upper.300 BLK · 5/8×24 · 10″ M-LOKAvailable SoonNotify Me When Available| Spec | 10.5″ 5.56/.223 | 10.5″ .300 BLK |
|---|---|---|
| Caliber | 5.56 NATO / .223 Rem | .300 BLK |
| SKU | OH-CU02 | OH-CU05 |
| Barrel length | 10.5 in. | 10.5 in. |
| Barrel profile | Medium | Medium |
| Barrel material | 4150 | 4150 |
| Twist rate | 1:7 | 1:7 |
| Muzzle thread | 1/2×28 | 5/8×24 |
| Gas system | Pistol | Pistol |
| Handguard | 10 in. M-LOK, free-float | 10 in. M-LOK, free-float |
| BCG | M16 black nitride, installed | M16 black nitride, installed |
| Charging handle | Standard, installed | Standard, installed |
| Fits | Mil-spec AR-15 lowers | Mil-spec AR-15 lowers |
| One Horse suppressor | Ashe 5.56/.223 | Ryn .30 cal |
| Price | $349.99 MSRP | $349.99 MSRP |
Specs and prices from the live One Horse product pages.
you want the 5.56 NATO / .223 Rem chambering on a 1/2×28 thread. The matching One Horse can is the Ashe 5.56.
you want a .300 BLK upper that runs supersonic and subsonic loads, on a 5/8×24 thread. On .300 BLK, One Horse pairs only the Ryn .30 cal.
Both use a medium-profile 4150 barrel, 1:7 twist, pistol-length gas and a 10″ free-float M-LOK handguard.
Gold TiN, Chameleon and Nickel BCGs are installed options on each upper. Compare on the BCG page. The standard M16 black nitride 300 BLK BCG is also sold on its own. Picking a buffer? See H2 vs H3 buffer.
Plan B mount included with each can.
One Horse suppressors are heavy duty, rugged and built with quality in mind. They aren't rated for full auto fire, but they're made to take abuse.
Suppressors ship to your dealer. Once it reaches your dealer, you fill out a 4473 and take it home once approved.
Want shorter or longer? See short AR-15 uppers and all complete uppers.
Two complete uppers: the 10.5″ 5.56/.223 (OH-CU02) and the 10.5″ .300 BLK (OH-CU05). Both have a medium-profile 4150 barrel, 1:7 twist, pistol-length gas and a 10″ free-float M-LOK handguard.
Yes. Both come with an M16 black nitride BCG and a standard charging handle installed.
Caliber and thread. The 5.56/.223 upper uses a 1/2×28 muzzle thread. The .300 BLK upper uses 5/8×24. The rest of the specs match.
It is chambered for .300 BLK. It runs both supersonic and subsonic loads.
The One Horse Ryn .30 cal, Plan B mount included. On .300 BLK, One Horse pairs only the Ryn.
The One Horse Ashe 5.56/.223, Plan B mount included.
Yes. Both are built for any standard mil-spec AR-15 lower receiver.
No. A complete upper is not the serialized part, so it ships straight to you. Check your state and local law before you order.
Orders of $399 or more ship free.
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Free shipping on orders $399 or more
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