Rock River Arms Completed Upper Receiver Left Handed RAGE .223/5.56mm 10.5 Inch Barrel 1-9 Twist 1/2-28 Thread Free-Float Handguard A2 Flash Hider
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Rock River Arms
Overview
The Rock River Arms Completed Upper Receiver is designed specifically for the AR-15 platform and comes fully assembled, making it a convenient choice for builders looking to streamline their project. Featuring a 10.5-inch barrel with a 1:9 twist rate, this upper is optimized for stability and accuracy with a variety of ammunition types in the 5.56 NATO caliber. The 1/2x28 thread pitch is standard for attaching muzzle devices, while the free-float handguard enhances precision by minimizing barrel movement. This upper receiver is commonly found in compact builds intended for close-quarters engagements or tactical applications.
Specifications
Rock River Arms Completed Upper Receiver Left Handed RAGE .223/5.56mm 10.5 Inch Barrel 1-9 Twist 1/2-28 Thread Free-Float Handguard A2 Flash Hider
Frequently Built With
Based on build data
BLEM PSA AR15 Complete Classic Stealth Lower, Black
Lower Receiver
Battle Arms Development Rack Ambidextrous Ar-15 Charging Handle - Mod C
Charging Handle
Aero Precision M4e1 Complete Lower Receiver W/moe Sl Grip & Sl-S Carbine Stock
Lower Receiver
Magpul AFG-2 Angled Fore Grip - Black
Foregrip
Radian Raptor Charging Handle & Talon Safety Selector Combo - Od Green
Charging Handle
Aero Precision Stripped M4e1 Ar-15 Lower Receiver - Special Edition - Freedom
Lower ReceiverBuild Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
PlatformBased on real build data showing which platform (AR-15, AR-10, AR-9) builders pair with this product.
CaliberBased on real build data showing which calibers builders choose alongside this product.
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
| Product | Category | Times Built Together |
|---|---|---|
| BLEM PSA AR15 Complete Classic Stealth Lower, Black | Lower Receiver | 360 |
| Battle Arms Development Rack Ambidextrous Ar-15 Charging Handle - Mod C | Charging Handle | 259 |
| Aero Precision M4e1 Complete Lower Receiver W/moe Sl Grip & Sl-S Carbine Stock | Lower Receiver | 230 |
| Magpul AFG-2 Angled Fore Grip - Black | Foregrip | 166 |
| Radian Raptor Charging Handle & Talon Safety Selector Combo - Od Green | Charging Handle | 160 |
| Aero Precision Stripped M4e1 Ar-15 Lower Receiver - Special Edition - Freedom | Lower Receiver | 142 |
| Platform | Percentage |
|---|---|
| AR-15 | 100% |
| Caliber | Percentage |
|---|---|
| 5.56 NATO | 100% |
| Gas System | Percentage |
|---|---|
| Mid-Length | 50.2% |
| Carbine | 24.5% |
| Rifle | 12.6% |
| Pistol | 11.2% |
| Blowback | 1.2% |
| Intermediate | 0.2% |
| Proprietary | 0.1% |
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