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Upper Receivers

5.56×45mm NATO

Brn-180s Upper Receivers With Pin & Weld Flash Hider - Brn-180s Gen 2 14.5'''' Upper Receiver Pinned/Welded .223wylde - Brownells

Brn-180s Upper Receivers With Pin & Weld Flash Hider - Brn-180s Gen 2 14.5'''' Upper Receiver Pinned/Welded .223wylde

Brn-9 Upper Receiver 9mm - Brn-9 Upper Receiver 9mm - Brownells

Brn-9 Upper Receiver 9mm - Brn-9 Upper Receiver 9mm

Brn 16a2 Upper Receiver - Brn-16a2 5.56x45 Nato 20'''' Bbl Upper Receiver - Brownells

Brn 16a2 Upper Receiver - Brn-16a2 5.56x45 Nato 20'''' Bbl Upper Receiver

Brn-180A(R) Gen 2 Complete Upper Receiver Assembly - Brn-180 Gen 2 16'''' 7.62x39mm Upper Receiver Assembly - Brownells

Brn-180A(R) Gen 2 Complete Upper Receiver Assembly - Brn-180 Gen 2 16'''' 7.62x39mm Upper Receiver Assembly

Brn-4(R) Complete Upper Receivers - Brn-4 5.56mm 14.5'''' Hvy Bbl Complete Upper W/13.5'''' Handguard - Brownells

Brn-4(R) Complete Upper Receivers - Brn-4 5.56mm 14.5'''' Hvy Bbl Complete Upper W/13.5'''' Handguard

Brn-4(R) Complete Upper Receivers - Brn-4 5.56mm 14.5'''' Med Bbl Complete Upper W/13.5'''' Handguard - Brownells

Brn-4(R) Complete Upper Receivers - Brn-4 5.56mm 14.5'''' Med Bbl Complete Upper W/13.5'''' Handguard

Brn-15 Upper Receivers 5.56mm Nato - Brn-15 5.56mm 16'''' Bbl .750'''' Gas Block Upper Receiver - Brownells

Brn-15 Upper Receivers 5.56mm Nato - Brn-15 5.56mm 16'''' Bbl .750'''' Gas Block Upper Receiver

Xm177e2 Complete Upper Receivers - Brn Xm177e2 Upper Receiver, 11.5'''', 1-7 Twist, Black - Brownells

Xm177e2 Complete Upper Receivers - Brn Xm177e2 Upper Receiver, 11.5'''', 1-7 Twist, Black

Gau-5a 12.7'''' 1-12 Upper Receivers - Brn-Gau-5a Upper Receiver, 12.7'''' 1-12 Twist, Pin/Weld, Black - Brownells

Gau-5a 12.7'''' 1-12 Upper Receivers - Brn-Gau-5a Upper Receiver, 12.7'''' 1-12 Twist, Pin/Weld, Black

Ar-15 M16 A1 Upper Receiver - Brn-16a1 M16a1 Upper Receiver Black - Brownells

Ar-15 M16 A1 Upper Receiver - Brn-16a1 M16a1 Upper Receiver Black

MAP (Minimum Advertised Price) means this product is for sale at a lower price than what the manufacturer allows advertised.

Xm177e2 Complete Upper Receivers - Brn Xm177e2 Upper Receiver, 12.7'''' 1-7 Twist, Pin/Weld, Black - Brownells

Xm177e2 Complete Upper Receivers - Brn Xm177e2 Upper Receiver, 12.7'''' 1-7 Twist, Pin/Weld, Black

Brn-4(R) Upper Receiver Assemblies With Chrome Lined Barrels - Brn-4 Assembled Upper 14.5'''' Heavy Chrome Lined Barrel Black - Brownells

Brn-4(R) Upper Receiver Assemblies With Chrome Lined Barrels - Brn-4 Assembled Upper 14.5'''' Heavy Chrome Lined Barrel Black

Brn-4(R) Upper Receiver Assemblies With Chrome Lined Barrels - Brn-4 Assembled Upper 10.4'''' Heavy Chrome Lined Barrel Black - Brownells

Brn-4(R) Upper Receiver Assemblies With Chrome Lined Barrels - Brn-4 Assembled Upper 10.4'''' Heavy Chrome Lined Barrel Black

733 C7 11.5'''' Upperr W/Colt Ar-15 4x21mm Optic - 733 C7 11.5'''' Upper W/Colt Ar-15 4x21mm - Brownells

733 C7 11.5'''' Upperr W/Colt Ar-15 4x21mm Optic - 733 C7 11.5'''' Upper W/Colt Ar-15 4x21mm

Brn-601 20'''' Upper W/Colt Ar-15 4x21mm Optic - Brn-601 5.56mm 20'''' Upper Receiver With Colt 4x21mm Scope - Brownells

Brn-601 20'''' Upper W/Colt Ar-15 4x21mm Optic - Brn-601 5.56mm 20'''' Upper Receiver With Colt 4x21mm Scope

Mk18 Riii 10.3'''' Stripped Upper Receivers W/ Law Folder - Mk18 Riii 10.3'''' Stripped Upper W/ Law Folder Black - Brownells

Mk18 Riii 10.3'''' Stripped Upper Receivers W/ Law Folder - Mk18 Riii 10.3'''' Stripped Upper W/ Law Folder Black

M4a1 Riii 14.5'''' Stripped Upper Receivers W/ Law Folder - M4a1 Riii 14.5'''' Stripped Upper W/ Law Folder Fde - Brownells

M4a1 Riii 14.5'''' Stripped Upper Receivers W/ Law Folder - M4a1 Riii 14.5'''' Stripped Upper W/ Law Folder Fde

Mk18 Riii 10.3'''' Stripped Upper Receivers W/ Law Folder - Mk18 Riii 10.3'''' Stripped Upper W/ Law Folder Fde - Brownells

Mk18 Riii 10.3'''' Stripped Upper Receivers W/ Law Folder - Mk18 Riii 10.3'''' Stripped Upper W/ Law Folder Fde

Brn-180A(R) Gen 2 Complete Upper Receiver Assembly - Brn-180 Gen 2 Upper Receiver 223 Wylde 16'''' Barrel Fde - Brownells

Brn-180A(R) Gen 2 Complete Upper Receiver Assembly - Brn-180 Gen 2 Upper Receiver 223 Wylde 16'''' Barrel Fde

M4a1 Riii 14.5'''' Stripped Upper Receivers W/ Law Folder - M4a1 Riii 14.5'''' Stripped Upper W/ Law Folder Blk - Brownells

M4a1 Riii 14.5'''' Stripped Upper Receivers W/ Law Folder - M4a1 Riii 14.5'''' Stripped Upper W/ Law Folder Blk

Brn16a2 20'''' Upper W/Colt Ar-15 4x21mm - Brn-16a2 5.56x45 Nato 20'''' Bbl Upper Receiver W/Colt 4x21mm - Brownells

Brn16a2 20'''' Upper W/Colt Ar-15 4x21mm - Brn-16a2 5.56x45 Nato 20'''' Bbl Upper Receiver W/Colt 4x21mm

Brn-4 Piston Upper Receiver Kits - Brn-4 16'''' Upper Receiver Kit W/ Medium Profile Barrel

Brn-4 Piston Upper Receiver Kits - Brn-4 14.5'''' Upper Receiver Kit W/ Medium Profile Barrel

M4a1 Fsp 14.5'''' Stripped Upper Receiver W/ Law Folder - M4a1 Fsp 14.5'''' Stripped Upper W/ Law Folder Fde - Brownells

M4a1 Fsp 14.5'''' Stripped Upper Receiver W/ Law Folder - M4a1 Fsp 14.5'''' Stripped Upper W/ Law Folder Fde

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