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Upper Receivers 102 Items

Upper Receivers Up To 25% Off - 102 Products In Stock / 21 Models

Browse 102 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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$969.99 - $1,120.00

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BROWNELLS BUNDLES - BRN-180 GEN 2 COMPLETE UPPER RECEIVER WITH MI SIDE FOLDING STOCK BROWNELLS BUNDLES - BRN-180 GEN 2 COMPLETE UPPER RECEIVER WITH MI SIDE FOLDING STOCK
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$974.99

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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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AERO PRECISION - M5E1 6.5 CREEDMORE ASSEMBLED UPPER RECEIVER W/GEN 2 HANDGUARD AERO PRECISION - M5E1 6.5 CREEDMORE ASSEMBLED UPPER RECEIVER W/GEN 2 HANDGUARD
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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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$599.99

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AERO PRECISION - M5 308 WIN ASSEMBLED UPPER RECEIVER W/ATLAS R-ONE HANDGUARD AERO PRECISION - M5 308 WIN ASSEMBLED UPPER RECEIVER W/ATLAS R-ONE HANDGUARD
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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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$599.99

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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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$454.99 - $599.99

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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
5 Stars
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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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Product badge 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
5 Stars
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$524.39

$579.95

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Product badge 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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$434.68 - $446.87

$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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BROWNELLS - BRN-15 13.7" UPPER RECEIVER ASSEMBLY 5.56MM BROWNELLS - BRN-15 13.7" UPPER RECEIVER ASSEMBLY 5.56MM
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$399.99

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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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BROWNELLS - BRN-15 16" UPPER RECEIVER ASSEMBLIES 5.56MM BROWNELLS - BRN-15 16" UPPER RECEIVER ASSEMBLIES 5.56MM
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$389.99

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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
5 Stars
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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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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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Product badge AERO PRECISION - EPC-9 9MM LUGER ASSEMBLED UPPER RECEIVER W/NO BARREL FOR AR15 AERO PRECISION - EPC-9 9MM LUGER ASSEMBLED UPPER RECEIVER W/NO BARREL FOR AR15
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LUTH-AR LLC - AR-308 A3 STRIPPED UPPER RECEIVER LUTH-AR LLC - AR-308 A3 STRIPPED UPPER RECEIVER
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$150.39

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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
5 Stars
(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
(4.7)

$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
5 Stars
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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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(4.6)

$899.99 - $949.99

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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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$899.99

In stock
DANIEL DEFENSE - MK12 SPR 18" 5.56MM NATO UPPER RECEIVER BLACK DANIEL DEFENSE - MK12 SPR 18" 5.56MM NATO UPPER RECEIVER BLACK
5 Stars
(4.5)

$1,633.00

In stock
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
(4.5)

$221.95

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PRIMARY WEAPONS - MK111 PRO 223 WYLDE COMPLETE UPPER RECEIVER FOR AR-15 PRIMARY WEAPONS - MK111 PRO 223 WYLDE COMPLETE UPPER RECEIVER FOR AR-15
5 Stars
(4.4)

$799.99

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BROWNELLS - BRN-180 GEN 3 223 WYLDE 13.9" P&W COMPLETE UPPER RECEIVER BROWNELLS - BRN-180 GEN 3 223 WYLDE 13.9" P&W COMPLETE UPPER RECEIVER
5 Stars
(4.3)

$1,199.99

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BROWNELLS - BRN-180™ GEN2 223 WYLDE 16" COMPLETE UPPER RECEIVER ASSEMBLY BROWNELLS - BRN-180™ GEN2 223 WYLDE 16" COMPLETE UPPER RECEIVER ASSEMBLY
5 Stars
(4.3)

$899.99

In stock
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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(4.2)

$444.99 - $909.99

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BROWNELLS - BRN-180S™ GEN2 223 WYLDE COMPLETE UPPER RECEIVER ASSEMBLY BROWNELLS - BRN-180S™ GEN2 223 WYLDE COMPLETE UPPER RECEIVER ASSEMBLY
5 Stars
(4.2)

$899.99

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COLT - AR15A4 UPPER RCVR ASSEMBLY, CARBINE COLT - AR15A4 UPPER RCVR ASSEMBLY, CARBINE
5 Stars
(4.1)

$175.99

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FN AMERICA LLC - FN15/AR 16" CARBINE UPPER RECEIVER ASSEMBLY FN AMERICA LLC - FN15/AR 16" CARBINE UPPER RECEIVER ASSEMBLY
5 Stars
(4.0)

$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 - AR-15 C7 STRIPPED UPPER RECEIVER BROWNELLS - AR-15 C7 STRIPPED UPPER RECEIVER
5 Stars
(4.0)

$149.99

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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

In stock
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
(3.7)

$1,757.00 - $1,777.00

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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 - BRN-180 GEN 3 300 BLACKOUT 9" COMPLETE UPPER RECEIVER ASSEMBLY BROWNELLS - BRN-180 GEN 3 300 BLACKOUT 9" COMPLETE UPPER RECEIVER ASSEMBLY
5 Stars
(3.6)

$1,199.99

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BROWNELLS - BRN-4 STRIPPED UPPER RECEIVER BILLET BROWNELLS - BRN-4 STRIPPED UPPER RECEIVER BILLET
5 Stars
(3.6)

$244.99

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BROWNELLS - BRN16A2 5.56 20" COMPLETE UPPER RECEIVER BROWNELLS - BRN16A2 5.56 20" COMPLETE UPPER RECEIVER
5 Stars
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$799.99

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BROWNELLS - BRN-180 GEN 3 223 WYLDE 16" COMPLETE UPPER RECEIVER ASSEMBLY BROWNELLS - BRN-180 GEN 3 223 WYLDE 16" COMPLETE UPPER RECEIVER ASSEMBLY
5 Stars
(3.3)

$1,199.99

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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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ANDERSON MANUFACTURING - AR15 STRIPPED UPPER RECEIVER ANDERSON MANUFACTURING - AR15 STRIPPED UPPER RECEIVER
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(3.3)

$62.99

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NORDIC COMPONENTS - 22RB DEDICATED 22 LONG RIFLE UPPER RECEIVER NORDIC COMPONENTS - 22RB DEDICATED 22 LONG RIFLE UPPER RECEIVER
5 Stars
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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
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$949.99

In stock
Product badge FAXON FIREARMS - ARAK-21 7.62X39MM COMPLETE UPPER RECEIVER FOR AR-15 FAXON FIREARMS - ARAK-21 7.62X39MM COMPLETE UPPER RECEIVER FOR AR-15
5 Stars
(1.0)

$881.47 - $882.69

$919.08

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Product badge 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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$548.43 - $609.37

$621.00 - $690.00

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

$103.35

In stock
FIGHTLITE INDUSTRIES - MCR DUAL-FEED 5.56X45 NATO UPPER RECEIVER FIGHTLITE INDUSTRIES - MCR DUAL-FEED 5.56X45 NATO UPPER RECEIVER
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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
5 Stars
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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
5 Stars
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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
5 Stars
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$1,429.99 - $1,612.99

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BROWNELLS BUNDLES - M5 16" ASSEMBLED UPPER RECEIVER 308 WIN W/ OPTICS BROWNELLS BUNDLES - M5 16" ASSEMBLED UPPER RECEIVER 308 WIN W/ OPTICS
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$699.99 - $1,514.39

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PRIMARY WEAPONS - BROWNELLS EXCLUSIVE MK1 ALPHA LT 223 WYLDE COMPLETE UPPER PRIMARY WEAPONS - BROWNELLS EXCLUSIVE MK1 ALPHA LT 223 WYLDE COMPLETE UPPER
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$1,349.00

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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
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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 - BRN-180 16" GEN 2 UPPER REC W/ MI ALPHA SERIES FOLDING STOCK BROWNELLS BUNDLES - BRN-180 16" GEN 2 UPPER REC W/ MI ALPHA SERIES FOLDING STOCK
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BROWNELLS BUNDLES - 200RDS X-TAC 62GR FMJ WITH BRN-180 16 BROWNELLS BUNDLES - 200RDS X-TAC 62GR FMJ WITH BRN-180 16
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BROWNELLS BUNDLES - BRN16A2 20" UPPER W/COLT AR-15 4x21MM BROWNELLS BUNDLES - BRN16A2 20" UPPER W/COLT AR-15 4x21MM
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$1,049.99

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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
5 Stars
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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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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
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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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Product badge BROWNELLS - GAU-5A 12.7" 1-12 UPPER RECEIVERS BROWNELLS - GAU-5A 12.7" 1-12 UPPER RECEIVERS
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$949.99 - $975.99

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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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