Brownells

Brn-180s(R) Gen 2 Complete Upper Receiver Assembly - Brn-180S Gen 2 Upper Receiver 223 Wylde 10.5" Barrel Black

All Brownells upper receivers
Brownells Brn-180s(R) Gen 2 Complete Upper Receiver Assembly - Brn-180s Gen 2 Upper Receiver 223 Wylde 10.5'''' Barrel Black - Upper Receiver for AR-15 - view 1

Brownells

Overview

The Brownells BRN-180S Gen 2 Complete Upper Receiver Assembly is designed for the AR-15 platform and features a 10.5-inch barrel chambered in .223 Wylde, allowing for versatile ammunition compatibility between .223 Remington and 5.56 NATO. This complete assembly simplifies your build process, providing a ready-to-install upper that ensures reliable performance and accuracy. Commonly found in builds focused on .223 Wylde, this upper receiver is an excellent choice for those looking to maximize their rifle's versatility.

Specifications

MPN250032590
AssemblyComplete
PlatformAR-15
ColorBlack
Caliber.223 Wylde
Barrel Length10.5

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Build history on GunPartPicker

Builders have been adding the Brownells Brn-180s(R) Gen 2 Complete Upper Receiver Assembly - Brn-180S Gen 2 Upper Receiver 223 Wylde 10.5" Barrel Black to their builds on GunPartPicker since February 2026. All time, it ranks #489 of the 1,714 upper receivers builders have added.

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Frequently Built With

The part most often added in each category by the builds that include this one

Timney AR-15 Impact Trigger Flat Black 3lb

Timney AR-15 Impact Trigger Flat Black 3lb

Trigger$109in 17% of them
ODIN Works OTR-15 .223 Remington AR Lower, Black - OTR15BilletLowerBLK

ODIN Works OTR-15 .223 Remington AR Lower, Black - OTR15BilletLowerBLK

Lower Receiver$332in 17% of them
Aero Precision AR-15 H3 Buffer

Aero Precision AR-15 H3 Buffer

Buffer$38 · out of stockin 17% of them
Daniel Defense Mil-Spec Carbine Buffer Tube - 6-Position

Daniel Defense Mil-Spec Carbine Buffer Tube - 6-Position

Buffer Tube$44in 17% of them
Aero Precision AR-15 Rifle Buffer KIT

Aero Precision AR-15 Rifle Buffer KIT

Buffer Tube Assembly$70in 17% of them
J P Enterprises Tuned Buffer Spring, Carbine

J P Enterprises Tuned Buffer Spring, Carbine

Buffer Spring$21in 17% of them

Build Configuration Breakdown

Aggregated and anonymized data showing how builders use this product

Gas System

50.3%
Mid-Length50.3%
Carbine25.7%
Pistol11.4%
Rifle10.9%
Blowback1.3%
Other0.3%

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