Availability: In Stock
Current Stock: Out of stock
The Rock River Arms BLK0592 LAR-15M Coyote Carbine complete upper brings proven 300 Blackout performance to your AR platform build. This isn't a bare receiver—it's a ready-to-run upper with bolt carrier group and charging handle already installed, so you're one lower away from a running rifle. The 16-inch chrome moly barrel twist is optimized for subsonic and supersonic rounds, making it a natural choice for hunters and shooters working with 300 Blackout's wide velocity envelope.
Rock River Arms engineered this upper around real-world usability. The 12.5-inch M-LOK free float rail gives you modern accessory mounting without the bulk, while the low-profile gas block keeps the profile clean. The Smith Vortex flash hider (5/8-24 thread) tames muzzle signature and blast, a practical feature whether you're running a can later or shooting unsuppressed. Everything here is built on an aluminum receiver with a black finish that stands up to field use.
If you're piecing together a 300 Blackout carbine for hunting, suppressed shooting, or short-range work, this complete upper eliminates guesswork on matching components. Just spec a lower, and you've got a functional rifle. The 16-inch tube strikes a good balance between velocity and handling in a modern carbine footprint.
| Caliber | 300 Blackout (300 AAC) |
| Barrel Length | 16 inches |
| Barrel Material | Chrome moly |
| Barrel Twist Rate | 1:8 |
| Receiver Material | Aluminum |
| Receiver Finish | Black |
| Handguard | RRA 12.5-inch M-LOK free float rail |
| Muzzle Device | Smith Vortex flash hider, 5/8-24 thread |
| Gas Block | Low-profile |
| Includes | Bolt carrier group and charging handle |
This is a complete upper receiver assembly. It includes the bolt carrier group and charging handle, so you only need a lower receiver to have a functional rifle. No additional upper receiver components are required.
The 1:8 twist rate is suitable for both subsonic and supersonic 300 Blackout ammunition. This makes it versatile for hunting, range shooting, and suppressed applications where 300 Blackout excels.
The Smith Vortex flash hider has a 5/8-24 thread, which is the standard 300 Blackout muzzle thread. You can remove it and install a suppressor with the same thread pattern if desired.
M-LOK is a modern mounting standard that uses slots milled into the rail for accessories. It's simpler to use than some older systems and lighter than quad rails, making it popular for carbines where weight and usability matter.
SKU: 126511994 • Width: 5.75in • Height: 5.75in • Depth: 32.5in • Weight: 6.13oz
Availability: In Stock
Current Stock: Out of stock
The Rock River Arms BLK0592 LAR-15M Coyote Carbine complete upper brings proven 300 Blackout performance to your AR platform build. This isn't a bare receiver—it's a ready-to-run upper with bolt carrier group and charging handle already installed, so you're one lower away from a running rifle. The 16-inch chrome moly barrel twist is optimized for subsonic and supersonic rounds, making it a natural choice for hunters and shooters working with 300 Blackout's wide velocity envelope.
Rock River Arms engineered this upper around real-world usability. The 12.5-inch M-LOK free float rail gives you modern accessory mounting without the bulk, while the low-profile gas block keeps the profile clean. The Smith Vortex flash hider (5/8-24 thread) tames muzzle signature and blast, a practical feature whether you're running a can later or shooting unsuppressed. Everything here is built on an aluminum receiver with a black finish that stands up to field use.
If you're piecing together a 300 Blackout carbine for hunting, suppressed shooting, or short-range work, this complete upper eliminates guesswork on matching components. Just spec a lower, and you've got a functional rifle. The 16-inch tube strikes a good balance between velocity and handling in a modern carbine footprint.
| Caliber | 300 Blackout (300 AAC) |
| Barrel Length | 16 inches |
| Barrel Material | Chrome moly |
| Barrel Twist Rate | 1:8 |
| Receiver Material | Aluminum |
| Receiver Finish | Black |
| Handguard | RRA 12.5-inch M-LOK free float rail |
| Muzzle Device | Smith Vortex flash hider, 5/8-24 thread |
| Gas Block | Low-profile |
| Includes | Bolt carrier group and charging handle |
This is a complete upper receiver assembly. It includes the bolt carrier group and charging handle, so you only need a lower receiver to have a functional rifle. No additional upper receiver components are required.
The 1:8 twist rate is suitable for both subsonic and supersonic 300 Blackout ammunition. This makes it versatile for hunting, range shooting, and suppressed applications where 300 Blackout excels.
The Smith Vortex flash hider has a 5/8-24 thread, which is the standard 300 Blackout muzzle thread. You can remove it and install a suppressor with the same thread pattern if desired.
M-LOK is a modern mounting standard that uses slots milled into the rail for accessories. It's simpler to use than some older systems and lighter than quad rails, making it popular for carbines where weight and usability matter.
SKU: 126511994 • Width: 5.75in • Height: 5.75in • Depth: 32.5in • Weight: 6.13oz