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Upper Receivers 101 Items

Upper Receivers Up To 25% Off - 101 Products In Stock / 21 Models

Browse 101 Upper Receivers from our Rifle Receivers & Parts dept including AERO PRECISION, BROWNELLS, BROWNELLS BUNDLES, & DANIEL DEFENSE Up To 25% Off at Brownells.

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BROWNELLS BUNDLES - M4A1 BLOCK II TRIBUTE BUNDLE BROWNELLS BUNDLES - M4A1 BLOCK II TRIBUTE BUNDLE
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$1,499.00

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GEISSELE AUTOMATICS LLC - AR-15 SUPER DUTY MOD1 5.56X45 NATO COMPLETE UPPER RECEIVER GEISSELE AUTOMATICS LLC - AR-15 SUPER DUTY MOD1 5.56X45 NATO COMPLETE UPPER RECEIVER
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$1,259.99 - $1,410.00

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GEISSELE AUTOMATICS LLC - AR-15 SUPER DUTY STRIPPED UPPER RECEIVERS 5.56MM GEISSELE AUTOMATICS LLC - AR-15 SUPER DUTY STRIPPED UPPER RECEIVERS 5.56MM
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DANIEL DEFENSE - M4A1 FSP 5.56X45MM STRIPPED UPPER RECEIVER DANIEL DEFENSE - M4A1 FSP 5.56X45MM STRIPPED UPPER RECEIVER
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COLT - M4 UPPER RECEIVER ASSEMBLY NO HANDGUARDS COLT - M4 UPPER RECEIVER ASSEMBLY NO HANDGUARDS
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AERO PRECISION - M4E1 6.5 GRENDEL ASSEMBLED UPPER RECEIVER W/ATLAS R-ONE AERO PRECISION - M4E1 6.5 GRENDEL ASSEMBLED UPPER RECEIVER W/ATLAS R-ONE
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$579.99 - $689.99

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GEMTECH - M&P 15-22 INTEGRA SUPPRESSED UPPER RECEIVER .22LR GEMTECH - M&P 15-22 INTEGRA SUPPRESSED UPPER RECEIVER .22LR
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$634.99

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KAK INDUSTRY LLC. - K-SPEC 5.56X45MM NATO COMPLETE UPPER RECEIVER KAK INDUSTRY LLC. - K-SPEC 5.56X45MM NATO COMPLETE UPPER RECEIVER
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AERO PRECISION - M4E1 5.56 ASSEMBLED UPPER RECEIVER RIFLE LENGTH W/G2 HANDGUARD AERO PRECISION - M4E1 5.56 ASSEMBLED UPPER RECEIVER RIFLE LENGTH W/G2 HANDGUARD
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AERO PRECISION - M4E1 5.56MM ASSEMBLED UPPER RECEIVER W/ATLAS R-ONE HANDGUARD AERO PRECISION - M4E1 5.56MM ASSEMBLED UPPER RECEIVER W/ATLAS R-ONE HANDGUARD
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MIDWEST INDUSTRIES, INC. - AR-15 10.5" CARBINE UPPER RECEIVER 1-7 M-LOK BLK 5.56MM MIDWEST INDUSTRIES, INC. - AR-15 10.5" CARBINE UPPER RECEIVER 1-7 M-LOK BLK 5.56MM
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AERO PRECISION - M4E1 .300BLK ASSEMBLED UPPER RECEIVER W/ATLAS S-ONE HANDGUARD AERO PRECISION - M4E1 .300BLK ASSEMBLED UPPER RECEIVER W/ATLAS S-ONE HANDGUARD
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AERO PRECISION - M4E1 5.56MM ASSEMBLED UPPER RECEIVER W/GEN-2 HANDGUARD & FSB AERO PRECISION - M4E1 5.56MM ASSEMBLED UPPER RECEIVER W/GEN-2 HANDGUARD & FSB
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$554.99

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AERO PRECISION - 5.56X45 NATO ASSEMBLED UPPER RECEIVER W/BARREL FOR AR-15 AERO PRECISION - 5.56X45 NATO ASSEMBLED UPPER RECEIVER W/BARREL FOR AR-15
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AERO PRECISION - M4E1 223 WYLDE ASSEMBLED UPPER RECEIVER W/GEN-2 HANDGUARD AR15 AERO PRECISION - M4E1 223 WYLDE ASSEMBLED UPPER RECEIVER W/GEN-2 HANDGUARD AR15
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$524.99 - $544.99

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AERO PRECISION - M4E1 5.56 ASSEMBLED UPPER RECEIVER W/M-LOK ATLAS S-ONE HANDGUARD AERO PRECISION - M4E1 5.56 ASSEMBLED UPPER RECEIVER W/M-LOK ATLAS S-ONE HANDGUARD
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FAXON FIREARMS - BANTAM 9MM LUGER COMPLETE UPPER RECEIVERS FOR AR-15 FAXON FIREARMS - BANTAM 9MM LUGER COMPLETE UPPER RECEIVERS FOR AR-15
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$492.20 - $506.60

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AERO PRECISION - 5.56X45MM NATO ASSEMBLED UPPER W/BARREL & PINNED FSB FOR AR-15 AERO PRECISION - 5.56X45MM NATO ASSEMBLED UPPER W/BARREL & PINNED FSB FOR AR-15
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$389.99 - $414.99

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KAK INDUSTRY LLC. - 5.56X45 NATO COMPLETE UPPER RECEIVER KAK INDUSTRY LLC. - 5.56X45 NATO COMPLETE UPPER RECEIVER
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$399.99

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LUTH-AR LLC - AR-15 16" LO-DRAG BULL UPPER RECEIVERS LUTH-AR LLC - AR-15 16" LO-DRAG BULL UPPER RECEIVERS
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$357.15 - $385.35

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BATTLE ARMS DEVELOPMENT INC. - AR-15 LIGHTWEIGHT BILLET UPPER RECEIVER BATTLE ARMS DEVELOPMENT INC. - AR-15 LIGHTWEIGHT BILLET UPPER RECEIVER
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$260.99

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SONS OF LIBERTY GUN WORKS - 5.56X45 NATO STRIPPED UPPER RECEIVER FOR AR-15 SONS OF LIBERTY GUN WORKS - 5.56X45 NATO STRIPPED UPPER RECEIVER FOR AR-15
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SPIKES TACTICAL - AR-15 9MM UPPER RECEIVER SPIKES TACTICAL - AR-15 9MM UPPER RECEIVER
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$112.99

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ZRO DELTA - AR-15 FORGED M4 UPPER RECEIVER 5.56MM ZRO DELTA - AR-15 FORGED M4 UPPER RECEIVER 5.56MM
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$69.99

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DANIEL DEFENSE - M4A1 RIII 5.56X45MM STRIPPED UPPER RECEIVER DANIEL DEFENSE - M4A1 RIII 5.56X45MM STRIPPED UPPER RECEIVER
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(4.9)

$899.99

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FIGHTLITE INDUSTRIES - MCR BELT-FED UPPER RECEIVER FULL AUTO FIGHTLITE INDUSTRIES - MCR BELT-FED UPPER RECEIVER FULL AUTO
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GEISSELE AUTOMATICS LLC - MK16 URG-I COMPLETE UPPER RECEIVERS 5.56MM GEISSELE AUTOMATICS LLC - MK16 URG-I COMPLETE UPPER RECEIVERS 5.56MM
5 Stars
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$1,273.99 - $1,349.99

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COLT - M4 5.56 COMPLETE MONOLITHIC UPPER RECEIVER GROUPS COLT - M4 5.56 COMPLETE MONOLITHIC UPPER RECEIVER GROUPS
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$949.99 - $1,059.00

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DANIEL DEFENSE - M4A1 SOCOM BLOCK II 5.56 NATO STRIPPED UPPER RECEIVER DANIEL DEFENSE - M4A1 SOCOM BLOCK II 5.56 NATO STRIPPED UPPER RECEIVER
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DANIEL DEFENSE - MK18 RIII 5.56X45MM STRIPPED UPPER RECEIVER DANIEL DEFENSE - MK18 RIII 5.56X45MM STRIPPED UPPER RECEIVER
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DANIEL DEFENSE - MK12 SPR 18" 5.56MM NATO UPPER RECEIVER BLACK DANIEL DEFENSE - MK12 SPR 18" 5.56MM NATO UPPER RECEIVER BLACK
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$1,633.00

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SONS OF LIBERTY GUN WORKS - EAST INDIA 5.56X45 ASSEMBLED UPPER RECEIVER STARTER KIT FOR AR15 SONS OF LIBERTY GUN WORKS - EAST INDIA 5.56X45 ASSEMBLED UPPER RECEIVER STARTER KIT FOR AR15
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$475.00 - $498.75

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WILSON COMBAT - AR-15 BILLET UPPER RECEIVER WILSON COMBAT - AR-15 BILLET UPPER RECEIVER
5 Stars
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$221.95

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COLT - AR15A4 UPPER RCVR, FLATTOP, MOD. CARB COLT - AR15A4 UPPER RCVR, FLATTOP, MOD. CARB
5 Stars
(4.3)

$129.99

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COLT - M4 5.56 UPPER RECEIVER GROUPS COLT - M4 5.56 UPPER RECEIVER GROUPS
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$444.99 - $909.99

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COLT - AR15A4 UPPER RCVR ASSEMBLY, CARBINE COLT - AR15A4 UPPER RCVR ASSEMBLY, CARBINE
5 Stars
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$175.99

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PRECISION REFLEX, INC. - AR-15 MK12 MOD 0 SPR GEN II 5.56X45 NATO UPPER RECEIVER PRECISION REFLEX, INC. - AR-15 MK12 MOD 0 SPR GEN II 5.56X45 NATO UPPER RECEIVER
5 Stars
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$1,757.00 - $1,777.00

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FN AMERICA LLC - FN15/AR 16" CARBINE UPPER RECEIVER ASSEMBLY FN AMERICA LLC - FN15/AR 16" CARBINE UPPER RECEIVER ASSEMBLY
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$809.00

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AERO PRECISION - M4E1 5.56 ASSEMBLED UPPER RECEIVER CARBINE W/G2 HANDGUARD AERO PRECISION - M4E1 5.56 ASSEMBLED UPPER RECEIVER CARBINE W/G2 HANDGUARD
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$534.99 - $579.99

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AERO PRECISION - M4E1 5.56 ASSEMBLED UPPER RECEIVER MID LENGTH W/G2 HANDGUARD AERO PRECISION - M4E1 5.56 ASSEMBLED UPPER RECEIVER MID LENGTH W/G2 HANDGUARD
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BROWNELLS - BRN-15 UPPER RECEIVERS 5.56MM NATO BROWNELLS - BRN-15 UPPER RECEIVERS 5.56MM NATO
5 Stars
(3.9)

$369.99 - $399.99

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BROWNELLS - AR-15 C7 STRIPPED UPPER RECEIVER BROWNELLS - AR-15 C7 STRIPPED UPPER RECEIVER
5 Stars
(3.8)

$149.99

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ODIN WORKS INC. - 9MM BILLET UPPER RECEIVER ODIN WORKS INC. - 9MM BILLET UPPER RECEIVER
5 Stars
(3.7)

$132.99

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BROWNELLS - AR-15/M16 SLICKSIDE 601 UPPER RECEIVER BROWNELLS - AR-15/M16 SLICKSIDE 601 UPPER RECEIVER
5 Stars
(3.3)

$139.99

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NORDIC COMPONENTS - 22RB DEDICATED 22 LONG RIFLE UPPER RECEIVER NORDIC COMPONENTS - 22RB DEDICATED 22 LONG RIFLE UPPER RECEIVER
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$516.60 - $549.99

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BROWNELLS - AR-15/M16 M16A2 STRIPPED UPPER RECEIVER BROWNELLS - AR-15/M16 M16A2 STRIPPED UPPER RECEIVER
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$149.99

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BROWNELLS BUNDLES - M4A1 14.5" STRIPPED SOCOM UPPER RECEIVERS w/ LAW FOLDER BROWNELLS BUNDLES - M4A1 14.5" STRIPPED SOCOM UPPER RECEIVERS w/ LAW FOLDER
5 Stars
(1.0)

$949.99

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FAXON FIREARMS - ARAK-21 7.62X39MM COMPLETE UPPER RECEIVER FOR AR-15 FAXON FIREARMS - ARAK-21 7.62X39MM COMPLETE UPPER RECEIVER FOR AR-15
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$919.08

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FAXON FIREARMS - ASCENT 22 ARC COMPLETE UPPER RECEIVER FOR AR-15 FAXON FIREARMS - ASCENT 22 ARC COMPLETE UPPER RECEIVER FOR AR-15
5 Stars
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$621.00 - $690.00

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LUTH-AR LLC - AR-15 A2 UPPER RECEIVER LUTH-AR LLC - AR-15 A2 UPPER RECEIVER
5 Stars
(1.0)

$103.35

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PRECISION REFLEX, INC. - AR-15 MK12 MOD 0 GEN III 5.56X45 NATO UPPER RECEIVER PRECISION REFLEX, INC. - AR-15 MK12 MOD 0 GEN III 5.56X45 NATO UPPER RECEIVER
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$1,709.00 - $1,729.00

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BROWNELLS BUNDLES - DD 14.5" M4A1 RIII UPPER RECEIVER W/ EOTECH OPTICS BROWNELLS BUNDLES - DD 14.5" M4A1 RIII UPPER RECEIVER W/ EOTECH OPTICS
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$1,529.99 - $1,697.29

In stock
BROWNELLS BUNDLES - DD 14.5" M4A1 FSP UPPER RECEIVER W/ EOTECH OPTICS BROWNELLS BUNDLES - DD 14.5" M4A1 FSP UPPER RECEIVER W/ EOTECH OPTICS
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$1,529.99 - $1,697.29

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BROWNELLS BUNDLES - DD 10.3" MK18 RIII UPPER RECEIVER W/ EOTECH OPTICS BROWNELLS BUNDLES - DD 10.3" MK18 RIII UPPER RECEIVER W/ EOTECH OPTICS
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$1,529.99 - $1,697.29

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BROWNELLS BUNDLES - DD 14.5" M4A1 SOMCOM UPPER RECEIVER W/ EOTECH OPTIC BROWNELLS BUNDLES - DD 14.5" M4A1 SOMCOM UPPER RECEIVER W/ EOTECH OPTIC
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$1,429.99 - $1,612.99

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BROWNELLS BUNDLES - M4E1-T 223 WYLDE ASSEMBLED UPPER RECEIVER 16" W/ OPTICS BROWNELLS BUNDLES - M4E1-T 223 WYLDE ASSEMBLED UPPER RECEIVER 16" W/ OPTICS
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$709.99 - $1,341.09

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DANIEL DEFENSE - DDM4 300s 10.3" 300 AAC BLACKOUT UPPER RECEIVER BLACK DANIEL DEFENSE - DDM4 300s 10.3" 300 AAC BLACKOUT UPPER RECEIVER BLACK
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$1,311.99

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Product badge SONS OF LIBERTY GUN WORKS - BROADSWORD-89 6MM MAX ASSEMBLED UPPER RECEIVER FOR AR-15 SONS OF LIBERTY GUN WORKS - BROADSWORD-89 6MM MAX ASSEMBLED UPPER RECEIVER FOR AR-15
5 Stars
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$1,187.50 - $1,282.50

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SONS OF LIBERTY GUN WORKS - BROADSWORD-89 6MM ARC ASSEMBLED UPPER RECEIVER FOR AR-15 SONS OF LIBERTY GUN WORKS - BROADSWORD-89 6MM ARC ASSEMBLED UPPER RECEIVER FOR AR-15
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$1,140.00 - $1,235.00

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SONS OF LIBERTY GUN WORKS - BROADSWORD-89 223 WYLDE ASSEMBLED UPPER RECEIVER FOR AR-15 SONS OF LIBERTY GUN WORKS - BROADSWORD-89 223 WYLDE ASSEMBLED UPPER RECEIVER FOR AR-15
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$1,140.00 - $1,235.00

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DANIEL DEFENSE - DDM4V7 S 11.5" 5.56MM NATO UPPER RECEIVER BLACK DANIEL DEFENSE - DDM4V7 S 11.5" 5.56MM NATO UPPER RECEIVER BLACK
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$1,214.00

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BROWNELLS BUNDLES - M4A1 FSP 14.5" STRIPPED UPPER RECEIVER W/ LAW FOLDER BROWNELLS BUNDLES - M4A1 FSP 14.5" STRIPPED UPPER RECEIVER W/ LAW FOLDER
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$1,049.99

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Product badge SONS OF LIBERTY GUN WORKS - M4-L89 5.56X45 NATO ASSEMBLED UPPER RECEIVER FOR AR-15 SONS OF LIBERTY GUN WORKS - M4-L89 5.56X45 NATO ASSEMBLED UPPER RECEIVER FOR AR-15
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$819.38 - $1,021.25

$1,092.50 - $1,116.25

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FAXON FIREARMS - ION ULTRALIGHT 5.56 NATO COMPLETE UPPER RECEIVER FOR AR-15 FAXON FIREARMS - ION ULTRALIGHT 5.56 NATO COMPLETE UPPER RECEIVER FOR AR-15
5 Stars
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$1,011.08

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Product badge BROWNELLS BUNDLES - GAU-5A COMPLETE UPPER RECEIVER & 4X RETRO CARRY HANDLE SCOPE BROWNELLS BUNDLES - GAU-5A COMPLETE UPPER RECEIVER & 4X RETRO CARRY HANDLE SCOPE
5 Stars
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$999.99

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RISE ARMAMENT - RISE .22 ARC COMPLETE UPPER RECEIVER FOR AR-15 RISE ARMAMENT - RISE .22 ARC COMPLETE UPPER RECEIVER FOR AR-15
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$999.00

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BROWNELLS BUNDLES - MK18 RIII 10.3" STRIPPED UPPER RECEIVERS W/ LAW FOLDER BROWNELLS BUNDLES - MK18 RIII 10.3" STRIPPED UPPER RECEIVERS W/ LAW FOLDER
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$949.99

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BROWNELLS BUNDLES - M4A1 RIII 14.5" STRIPPED UPPER RECEIVERS W/ LAW FOLDER BROWNELLS BUNDLES - M4A1 RIII 14.5" STRIPPED UPPER RECEIVERS W/ LAW FOLDER
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$944.99

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RADIAN WEAPONS - MODEL 1 UPPER & HANDGUARD SET RADIAN WEAPONS - MODEL 1 UPPER & HANDGUARD SET
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$814.95 - $924.95

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FAXON FIREARMS - ARAK-21 5.56X45 NATO COMPLETE UPPER RECEIVER FOR AR-15 FAXON FIREARMS - ARAK-21 5.56X45 NATO COMPLETE UPPER RECEIVER FOR AR-15
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$918.08 - $919.08

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AERO PRECISION - M4E1 350 LEGEND ASSEMBLED UPPER RECEIVER W/ATLAS R-ONE AERO PRECISION - M4E1 350 LEGEND ASSEMBLED UPPER RECEIVER W/ATLAS R-ONE
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BROWNELLS - BRN-16A4 COMPLETE UPPER RECEIVER BROWNELLS - BRN-16A4 COMPLETE UPPER RECEIVER
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$599.99

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FAXON FIREARMS - ASCENT 5.56X45 NATO COMPLETE UPPER RECEIVER FOR AR-15 FAXON FIREARMS - ASCENT 5.56X45 NATO COMPLETE UPPER RECEIVER FOR AR-15
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$529.00

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BATTLE ARMS DEVELOPMENT INC. - AR-15 WORKHORSE UPPER RECEIVERS- NO BCG OR CHARGING HANDLE BATTLE ARMS DEVELOPMENT INC. - AR-15 WORKHORSE UPPER RECEIVERS- NO BCG OR CHARGING HANDLE
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$499.99

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CROSS MACHINE TOOL CO., INC. - AR15 CMT BILLET UPPER RECEIVER .458 SOCOM CROSS MACHINE TOOL CO., INC. - AR15 CMT BILLET UPPER RECEIVER .458 SOCOM
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$210.99

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KNIGHT'S ARMAMENT - SR-15 E3 MOD 2 UPPER RECEIVERS KNIGHT'S ARMAMENT - SR-15 E3 MOD 2 UPPER RECEIVERS
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$2,099.99 - $2,172.99

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DANIEL DEFENSE - DDM4V7 PRO 18" 5.56MM NATO COMPLETE UPPER RECEIVER BLACK DANIEL DEFENSE - DDM4V7 PRO 18" 5.56MM NATO COMPLETE UPPER RECEIVER BLACK
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$1,572.00

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MEAN ARMS - BEARING DELAY 9MM LUGER COMPLETE UPPER RECEIVER MEAN ARMS - BEARING DELAY 9MM LUGER COMPLETE UPPER RECEIVER
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$1,399.99 - $1,499.99

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DANIEL DEFENSE - MK18 5.56 UPPER RECEIVER GROUP COMPLETE DANIEL DEFENSE - MK18 5.56 UPPER RECEIVER GROUP COMPLETE
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$1,412.00

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DANIEL DEFENSE - DDM4V7 16" 5.56MM NATO UPPER RECEIVER BLACK DANIEL DEFENSE - DDM4V7 16" 5.56MM NATO UPPER RECEIVER BLACK
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$1,214.00

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DANIEL DEFENSE - DDM4V7 LW 16" 5.56MM NATO LIGHTWEIGHT UPPER RECEIVER BLACK DANIEL DEFENSE - DDM4V7 LW 16" 5.56MM NATO LIGHTWEIGHT UPPER RECEIVER BLACK
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$1,214.00

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COLT - M4 ENHANCED PATROL RIFLE 5.56 UPPER RECEIVER GROUPS COLT - M4 ENHANCED PATROL RIFLE 5.56 UPPER RECEIVER GROUPS
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$729.99 - $999.99

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AERO PRECISION - M4E1 300BLK ASSEMBLED UPPER RECEIVER W/ATLAS R-ONE HANDGUARD AERO PRECISION - M4E1 300BLK ASSEMBLED UPPER RECEIVER W/ATLAS R-ONE HANDGUARD
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AERO PRECISION - M4E1 .300 AAC ASSEMBLED UPPER RECEIVER W/GEN-2 HANDGUARD AR-15 AERO PRECISION - M4E1 .300 AAC ASSEMBLED UPPER RECEIVER W/GEN-2 HANDGUARD AR-15
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AERO PRECISION - EPC-9 9MM ASSEMBLED UPPER RECEIVER W/ATLAS R-ONE HANDGUARD AERO PRECISION - EPC-9 9MM ASSEMBLED UPPER RECEIVER W/ATLAS R-ONE HANDGUARD
5 Stars
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$459.99 - $529.99

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AERO PRECISION - EPC-9 9MM ENHANCED ASSEMBLED UPPER RECEIVER w/G2 HANDGUARD AERO PRECISION - EPC-9 9MM ENHANCED ASSEMBLED UPPER RECEIVER w/G2 HANDGUARD
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$454.99 - $524.99

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SHARPS BROS - AR-15 BILLET UPPER RECEIVER SHARPS BROS - AR-15 BILLET UPPER RECEIVER
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$194.70

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AERO PRECISION - M4E1 ENHANCED ASSEMBLED UPPER RECEIVER W/NO FORWARD ASSIST AERO PRECISION - M4E1 ENHANCED ASSEMBLED UPPER RECEIVER W/NO FORWARD ASSIST
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$169.99 - $189.99

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ODIN WORKS INC. - AR-15 BILLET UPPER RECEIVER ODIN WORKS INC. - AR-15 BILLET UPPER RECEIVER
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$160.55

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AERO PRECISION - M4E1 5.56MM STRIPPED UPPER RECEIVER W/NO FORWARD ASSIST AR-15 AERO PRECISION - M4E1 5.56MM STRIPPED UPPER RECEIVER W/NO FORWARD ASSIST AR-15
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