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BRN-180 lower compatibility

cnoteleo

Joined: Nov 2012

Posts: 377

EE: 100% (11)

TN, USA

Posted: 3/31/2026 8:08:30 PM EDT

Ive got two older BRN-180 lowers, it seems brownells isnt restocking the uppers, has anyone used the for another upper?

stiglitz_actual

Member

Joined: Jul 2017

Posts: 3697

EE: 100% (63)

DEU

Posted: 3/31/2026 8:15:13 PM EDT

[Last Edit: stiglitz_actual][Edited] [#1]

They'll work with other bufferless uppers - like a .22 or options from FM. Don't think they'll work with CMMG

The original lowers, both modern & retro, are still in demand and pretty easy to sell on the EE or Tacswap for $150-200

ALASKANFIRE

Member

Joined: Jul 2007

Posts: 50878

EE: 100% (5)

NV, USA

Posted: 3/31/2026 9:01:58 PM EDT

[#2]

I think some of the Foxtrot Mike uppers say they will work with the Brownells lower.

BikerNut:
Normal people like motorcycles. Real people like motorcycles.

People who don't like motorcycles are just... weird.

Ghostface

.40 S&W advocate

Joined: Mar 2001

Posts: 11679

EE: 100% (75)

IN, USA

Posted: 4/2/2026 9:17:08 PM EDT

[Last Edit: Ghostface][Edited] [#3]

@cnoteleo

I sent you an IM

If a 147 grn 9mm at 1000 FPS is the hammer of Thor then a 165 grn. 40 at 1200 fps must a lightening bolt from Zeus!

BrownellsGT_TommyT

Member

Joined: Feb 2025

Posts: 45

EE: 0% (0)

IA, USA

Posted: 4/7/2026 8:54:29 AM EDT

[#4]

I've used them with Mat 9 uppers and Stern Defense Mag adapters.

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BRN-180 lower compatibility

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BRN-180 lower compatibility

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BRN-180 lower compatibility