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Brownells
Overview
The Brownells BRN-180 Gen 3 Upper is a complete upper receiver designed for the AR-15 platform, featuring a 13.9-inch barrel chambered in .223 Wylde, which allows for greater versatility with both .223 Remington and 5.56 NATO rounds. It utilizes a carbine-length gas system, ensuring reliable cycling and performance in a compact design, and the 1:8 twist rate is ideal for stabilizing a wide range of bullet weights. This upper is commonly found in builds focused on tactical applications and close-quarters engagements, where maneuverability and reliability are key.
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 ReceiverAggregated and anonymized data showing how builders use 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 |
|---|---|
| .223 Wylde | 100% |
| Gas System | Percentage |
|---|---|
| Carbine | 100% |
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