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Prime Time To Build Sale - Take 15% Off Gun Parts w/ Code PRIME15 - SHOP NOW

Prime Time To Build Sale - Take 15% Off Gun Parts w/ Code PRIME15 - SHOP NOW

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Brownells BRN-180® Line

Brownells
one year ago

BRN-180S® GEN2

.300 BLK

10" Barrel

BRN-180S® GEN2

.223 Wylde or 7.62x39mm

10.5" Barrel

BRN-180S® GEN2

.223 Wylde

13.9" Barrel

BRN-180S® GEN2

.223 Wylde

14.5" Barrel

BRN-180® GEN2

.223 Wylde or 7.62x39mm

16" Barrel

BRN-180® 350 Legend

350 Legend

16" Barrel

NEW

BRN-180® GEN2

.223 Wylde

18.5" Barrel

BRN-180® Gen2 Overview

BRN-180s in 300 Blackout on top of a BRN-180 forged lower.
BRN-180S® 300 BLK Upper On A BRN-180® Forged Lower.

The new Brownells BRN-180® and BRN-180S® Gen2 upper receivers were designed in conjunction with PWS and FM Products to incorporate many improvements AR-15 creator Eugene Stoner made in the AR-18/AR-180 rifles originally introduced in the 1960s. Key features that make the BRN-180® the "revolutionary evolution" of the AR-15 platform include:

  • Ultra-reliable, short stroke gas piston operating system
  • NO buffer tube! Ideal for a folding stock (see below)
  • Can be fired with a folding stock FOLDED!
  • Adjustable gas block lets you control gas flow for a sound suppressor
  • Rock-solid Picatinny/M-LOK handguard easily detaches by removing ONE screw
  • Compatible with any mil-spec AR-15 lower receiver
  • Or mate to a dedicated Picatinny-stock ready BRN-180 lower
  • AR-180-style 3-prong flash hider really quells the fireball
  • Muzzle threads: 1/2"-28 tpi (.223) and 5/8"-24 tpi (300 BLK & 7.62x39)

The BRN-180 and BRN-180S Gen2 upper receivers are available chambered in .223 Wylde (optimized for both .223 Remington and 5.56 NATO ammo), .300 Blackout, and 7.62x39mm. All barrels are button rifled with a 1-8" twist rate and come in pistol, carbine, and rifle barrel lengths.

BRN-180® Gen2 Videos

Brownells BRN-180 Gen2:
An Introduction

Brownells BRN-180 Gen2:
How to Field Strip

Changing the BRN-180 .300 Blackout Flash Hider

BRN-180® Gen2 Model Comparison

Fetures:

SKU:

Chambered:

Barrel Length:

Length:

Weight:

Action Type:

Gasblock:

Twist Rate:

Muzzle:

Finish:

brn-180s 300blk

BRN-180S® 300 BLK

078-000-609

.300 Blackout

10 inch

18.57 inches

4 lbs 10 oz

Gas Piston

Adjustable

1:8

3 Prong Flash Hider

Anodized Black

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BRN-180S .223 Wylde

BRN-180S®

078-000-599

.223 Wylde

10.5 inch

18.7 inches

3 lbs 15 oz

Gas Piston

Adjustable

1:8

3 Prong Flash Hider

Anodized Black

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BRN-180S 7.62x39mm

BRN-180S®

078-000-724

7.62x39mm

10.5 inch

18.7 inches

3 lbs 15 oz

Gas Piston

Adjustable

1:8

3 Prong Flash Hider

Anodized Black

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BRN-180S .223 Wylde 13.9"

BRN-180S® 13.9"

430-106-123

.223 Wylde

13.9 inch

20.875 inches

4 lbs 0 oz

Gas Piston

Adjustable

1:8

None

Anodized Black

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BRN-180S .223 Wylde 14.5"

BRN-180S® 14.5"

430-106-122

.223 Wylde

14.5 inch

21.5 inches

4 lbs 1.7 oz

Gas Piston

Adjustable

1:8

None

Anodized Black

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BRN-180 16&quote; .223 Wylde

BRN-180® 16"

078-000-600

.223 Wylde

16 inch

24.57 inches

4 lbs 10 oz

Gas Piston

Adjustable

1:8

3 Prong Flash Hider

Anodized Black

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BRN-180 16&quote; 7.62x39mm

BRN-180® 16"

078-000-723

7.62x39mm

16 inch

24.57 inches

4 lbs 10 oz

Gas Piston

Adjustable

1:8

3 Prong Flash Hider

Anodized Black

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BRN-180 350 Legend

BRN-180® 350 Legend

430-103-461

350 Legend

16 inch

23.375 inches

4 lbs 10.2 oz

Gas Piston

Adjustable

1:8

Thread Protector

Anodized Black

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BRN-180 18.5&quote; 223

BRN-180® 18.5"

078-000-601

.223 Wylde

18.5 inches

27.07 inches

4 lbs 13 oz

Gas Piston

Adjustable

1:8

3 Prong Flash Hider

Anodized Black

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BRN-180® Gen2 Photos

BRN-180 Gen2 Angled Forward BRN-180 Gen2 Angled Back BRN-180 Gen2 Right Side BRN-180 Gen2 Left Side BRN-180 Gen2 Under Side BRN-180 Gen2 Flash Hider BRN-180 Gen2 Disassembled BRN-180S Gen2 Angled Forward BRN-180S Gen2 Angled Back BRN-180S Gen2 Right Side BRN-180S Gen2 Left Side BRN-180S Gen2 Under Side BRN-180S Gen2 Flash Hider BRN-180S Gen2 Disassembled BRN-180 Gen2 300 Blackout Angled Forward BRN-180 Gen2 300 Blackout Angled Back BRN-180 Gen2 300 Blackout Right Side BRN-180 Gen2 300 Blackout Left Side BRN-180 Gen2 300 Blackout Under Side BRN-180 Gen2 300 Blackout Flash Hider BRN-180 Gen2 300 Blackout Disassembled Dust Cover & Charging Handle Bolt Carrier Group Bolt Carrier Group Back Side Bolt Back Bolt Front Bolt And Rails
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BRN-180 Gen2 Angled Forward
BRN-180 Gen2 Angled Back
BRN-180 Gen2 Right Side
BRN-180 Gen2 Left Side
BRN-180 Gen2 Under Side
BRN-180 Gen2 Flash Hider
BRN-180 Gen2 Disassembled
BRN-180S Gen2 Angled Forward
BRN-180S Gen2 Angled Back
BRN-180S Gen2 Right Side
BRN-180S Gen2 Left Side
BRN-180S Gen2 Under Side
BRN-180S Gen2 Flash Hider
BRN-180S Gen2 Disassembled
BRN-180 Gen2 300 Blackout Angled Forward
BRN-180 Gen2 300 Blackout Angled Back
BRN-180 Gen2 300 Blackout Right Side
BRN-180 Gen2 300 Blackout Left Side
BRN-180 Gen2 300 Blackout Under Side
BRN-180 Gen2 300 Blackout Flash Hider
BRN-180 Gen2 300 Blackout Disassembled
Dust Cover & Charging Handle
Bolt Carrier Group
Bolt Carrier Group Back Side
Bolt Back
Bolt Front
Bolt And Rails

BRN-180® Gen2 Details

BRN-180 On Your Existing AR-15 Lower BRN-180 On Folding Stock Lower BRN-180 On No Buffer Lower BRN-180 On BRN-4 Lower BRN-180 On Fixed Rifle Length Lower

Fits Mil-Spec AR-15 Lowers: The BRN-180®/BRN-180S® is a complete, plug-and-play upper assembly that drops onto any standard mil-spec AR-15 lower.

BRN-180 GEN2 Gas System

Short-Stroke Gas Piston: Designed for maximum reliability, the short-stroke gas piston keeps fouling out of the receiver and helps the bolt run cool and clean. The entire piston system is contained within the receiver, so the BRN-180/-180S does NOT require the standard AR-15 recoil buffer, spring, and receiver extension.

BRN-180 GEN2 Flash Hider

Flash Hider: The 3-prong flash hider has the authentic look of the original AR-180, while also effectively reducing both muzzle flash and rise. Note that the 13.9" and 14.5" ship with no flash hider.

Adjustable Gas Block: ALL Gen2 BRN-180® models now have an adjustable gas block that enables you to easily dial in the correct amount of gas flow for suppressed OR unsuppressed shooting.

BRN-180 GEN2 Hand Guard Set Screw

Simple Yet Rock-Solid Handguard Attachment: The Gen2 handguard is now retained by a single, large setscrew, a big improvement over the over the original BRN-180 uppers. Remove it with a hex wrench, and the whole handguard comes off. Once the 'guard is removed, you have access to the gas system without removing any internal components. This new system offers more than ample locking force to keep the handguard securely anchored.

BRN-180 GEN2 Carrier

Bolt Carrier & Recoil Guide Rods: True to the original, the bolt carrier rides on twin recoil guide rods for a smooth, light recoil impulse. The recoil system is completely self-contained in the upper.

BRN-180 GEN2 Bolt Detail

Bolt: The BRN-180® bolt features a tough black oxide finish for easy cleaning and corrosion resistance. It's a classic multi-lug rotating bolt that ensures reliability and secure lockup.

BRN-180 On Folded AR-15

Folding Stock Ready! Because the BRN-180's recoil assembly is contained ENTIRELY in the upper, there is no need for the AR-15's recoil buffer, spring, and buffer tube. You'll still need the tube for mounting a stock, unless you get one of our dedicated BRN-180® lowers (see below). A BRN-180® rifle readily accepts folding stocks - and you can fire the gun with the stock FOLDED!

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ADM UIC-180 Stripped Billet Lower

The Perfect "Other Half" for Your BRN-180®

Now only available from Brownells, the ADM UIC-180 Stripped Billet Lower features an integrated 1913 picatinny rail section to attach any rail compatible stock or brace to take full advantage of the BRN-180® upper's self-contained recoil system. The UIC-180 lower retains the renowned proprietary ambidextrous magazine release, ambidextrous bolt catch/release lever & dimpled takedown and pivot pins found on the original ADM UIC.

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Midwest Industries Stocks

Midwest Industries Picatinny Compatible Stocks

Unlock the full potential of the BRN-180 upper's self-contained recoil system by pairing it with a BRN-180 lower (or picatinny stock adapter from KNS Precision) and Midwest Industries' line of stocks designed for the BRN-180. From high-value lightweight beam-style stocks to versatile stock tubes, enabling you to choose your preferred stock, and the full-featured Alpha Series of stocks, there is an option for every budget and every shooter!

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JMAC Customs Stocks

JMAC Customs Picatinny Compatible Stocks

From compact folding options for tactical mobility to ergonomically designed fixed stocks, JMAC Customs offers versatility for every shooter. The durability of materials ensures long-lasting performance, while innovative designs enhance aesthetics. Whether you seek tactical efficiency or customizable style, JMAC Customs stocks deliver. Upgrade your BRN-180 with JMAC Customs and experience a new standard of shooting excellence.

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Foxtrot Mike Lower

Foxtrot Mike G2 Bufferless Billet Lowers

Renowned for machining excellence, Foxtrot Mike now offers billet lowers designed and optimized for the BRN-180. Choose from the basic complete lower with a Picatinny adapter, allowing you to utilize stocks from Midwest Industries, JMAC Customs, Sig Sauer, and more. Opt for an option that includes a folding adapter for the most compact package possible or the Magpul Zhukov option for the ultimate in comfort and adjustability!

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