Rock River Arms Tactical Carbine Complete Upper Receiver Features
The Rock River Arms Tactical Carbine Complete Upper Receiver is equipped with a 16″ chrome moly barrel with a 1:24 twist rate, ensuring excellent accuracy and stability for .450 Bushmaster ammunition. The RRA Operator Muzzle Brake, with a 5/8-32 thread, effectively reduces recoil and muzzle rise, enhancing shooting comfort and control.
This upper receiver features a low profile gas block and a mid-length gas system, providing reliable operation and smooth cycling. The RRA 13″ extended lightweight free float M-LOK handguard offers ample space for accessory attachment while maintaining a lightweight profile.
The package includes a bolt carrier group and a charging handle assembly, ensuring you have all the necessary components for a complete and functional upper receiver. Additionally, it comes with one 5-round magazine, making it ready for use right out of the box.
Rock River Arms Tactical Carbine Complete Upper Receiver Specifications
- Manufacturer: Rock River Arms
- Model: Tactical Carbine Complete Upper Receiver
- Caliber: .450 Bushmaster
- Barrel Length: 16″
- Barrel Material: Chrome Moly
- Twist Rate: 1:24
- Muzzle: RRA Operator Muzzle Brake
- Thread Pattern: 5/8-32
- Gas Block: Low Profile
- Gas System: Mid-Length
- Handguard: RRA 13″ Extended Lightweight Free Float M-LOK
- Finish: Anodized
- Color: Black
- Includes: Bolt Carrier Group and Charging Handle Assembly
- Magazine: (1) 5-round magazine
- Compatibility: Fits AR-15
| Barrel Length | 16 |
|---|---|
| Caliber | .450 BM |
| Capacity | 5 |
| Condition | New in Box |
| Finish Per Color | Black |
| Manufacturer | Rock River Arms |
| Manufacturer Part Number | 450B0592 |
| Model | Tactical Carbine Complete Upper |
| Type | Uppers |
| UPC | 842834125548 |
Frequently Asked Questions About This Product
Why buy Rock River Arms Tactical Carbine Complete Upper .450 BM 16" Barrel w/ 5-Round Mag from Miami Shooters Supply?
We’re a trusted firearms dealer offering fast shipping, competitive pricing, and 100% compliance with U.S. federal firearm laws. All orders ship from our licensed facility with full tracking and expert customer service.
Where can I buy Rock River Arms Tactical Carbine Complete Upper .450 BM 16" Barrel w/ 5-Round Mag?
You can purchase this item directly on our website and have it shipped to your local FFL dealer. You can also visit us in-store in Miami, Florida.
Is Rock River Arms Tactical Carbine Complete Upper .450 BM 16" Barrel w/ 5-Round Mag available now?
Availability is shown live on this page. If the “Add to Cart” button is visible, this item is currently in stock and ready to ship.
What category does this product belong to?
This product is listed under: RIFLES, Uppers.
What tags or features does this product have?
Key features and tags for this product include: RIFLES, Uppers.
Is this product legal in my state?
It is your responsibility to ensure this item is legal in your state or locality. We ship only to valid FFL dealers in compliance with U.S. laws. Always check your local regulations.
FFL Transfer & Firearms Laws for Rock River Arms Tactical Carbine Complete Upper .450 BM 16" Barrel w/ 5-Round Mag
All firearms, including the Rock River Arms Tactical Carbine Complete Upper .450 BM 16" Barrel w/ 5-Round Mag, must be shipped to a licensed Federal Firearms License (FFL) dealer. You will be required to complete a background check and any necessary paperwork before taking possession.
How It Works
- Place your order online.
- Provide your preferred FFL dealer information.
- We ship the firearm directly to your FFL.
- You complete the background check and pickup at the FFL.
Legal Compliance
We comply with all federal and state firearm laws. It is your responsibility to ensure the Rock River Arms Tactical Carbine Complete Upper .450 BM 16" Barrel w/ 5-Round Mag is legal in your state. Some states may have restrictions on certain firearm models or features.
Helpful Resources
Need assistance? Contact our Miami store for help with FFL transfers and firearm compliance.
![KELTEC SUB2000 GEN3 [BLK] 5.7x28MM for sale Miami Shooters Supply](https://miamishooterssupply.com/wp-content/uploads/2025/05/66d0e4478a80ae08beca8726a9755e8ad112e6657079e-1-300x300.png)
![KELTEC SUB2000 GEN3 [BLK] SEMI AUTO](https://miamishooterssupply.com/wp-content/uploads/2025/05/6594213013ec577d847a70f2f92e28560a20e4c70af4f-300x300.png)
