Holosun Pistol Dot Sale - Save 12% Now!

Holosun Pistol Dot Sale - Save 12% Now!

3768-BOGO-Deals-CP-Hero-1920x385
3768-BOGO-Deals-CP-Hero-768x450

NEVER COMPROMISE

Fold Your AR And
Don't Sacrifice Reliability
Shop Now
4509 Site Banners - BRN180 Gen-3 Launch_Category Hero
4509 Site Banners - BRN180 Gen-3 Launch_Category Hero Mobile(1)

SEE WHAT YOU'VE
BEEN MISSING

Meet The BRN-180® Gen 3 Uppers
Introduce Me!
4326-BRN-4-Complete-Uppers-CP-Hero-1920x385
4326-BRN-4-Complete-Uppers-CP-Hero-768x450

A RIFLE TO GET YOU
TO HELL AND BACK

Brownells HK416 Compatible BRN-4 Line
Explore The BRN-4
3989-Exclusive-KSPEC-Complete-Uppers-CP-Hero-1920x385
3989-Exclusive-KSPEC-Complete-Uppers-CP-Hero-746x450

NEW UPPERS FROM
KAK INDUSTRIES

Feature Packed Exclusive Uppers Including
Down Vent BCG, Chrome Lining & MORE

Discover Now

Upper Receivers 103 Items

Upper Receivers Up To 25% Off - 103 Products In Stock / 28 Models

Browse 103 Upper Receivers from our Rifle Receivers & Parts dept including AERO PRECISION, BROWNELLS, BROWNELLS BUNDLES, & PRIMARY WEAPONS Up To 25% Off at Brownells.

Sort by:
103 Results
You're viewing results for:
Products: – of 190
Number of results:
  • 32
  • 64
  • 96
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
5 Stars
(5.0)

$1,259.99 - $1,410.00

Select Items In Stock
GEISSELE AUTOMATICS LLC - AR-15 SUPER DUTY STRIPPED UPPER RECEIVERS 5.56MM GEISSELE AUTOMATICS LLC - AR-15 SUPER DUTY STRIPPED UPPER RECEIVERS 5.56MM
5 Stars
(5.0)

$969.99 - $1,120.00

Select Items In Stock
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
5 Stars
(5.0)

$974.99

In stock
Product badge
DANIEL DEFENSE - M4A1 FSP 5.56X45MM STRIPPED UPPER RECEIVER DANIEL DEFENSE - M4A1 FSP 5.56X45MM STRIPPED UPPER RECEIVER
5 Stars
(5.0)

$899.99

In stock
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
5 Stars
(5.0)
Add to cart to see price

Select Items In Stock
COLT - M4 UPPER RECEIVER ASSEMBLY NO HANDGUARDS COLT - M4 UPPER RECEIVER ASSEMBLY NO HANDGUARDS
5 Stars
(5.0)

$749.99

Select Items In Stock
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
5 Stars
(5.0)

$579.99 - $689.99

Select Items In Stock
GEMTECH - M&P 15-22 INTEGRA SUPPRESSED UPPER RECEIVER .22LR GEMTECH - M&P 15-22 INTEGRA SUPPRESSED UPPER RECEIVER .22LR
5 Stars
(5.0)

$634.99

Online Only - In stock
Product badge
KAK INDUSTRY LLC. - K-SPEC 5.56X45MM NATO COMPLETE UPPER RECEIVER KAK INDUSTRY LLC. - K-SPEC 5.56X45MM NATO COMPLETE UPPER RECEIVER
5 Stars
(5.0)

$599.99

In stock
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
5 Stars
(5.0)
Add to cart to see price

In stock
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
5 Stars
(5.0)

$599.99

In stock
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
5 Stars
(5.0)

$454.99 - $599.99

Select Items In Stock
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
(5.0)

$579.95

In stock
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
(5.0)

$554.99

In stock
AERO PRECISION - M4E1 .300BLK ASSEMBLED UPPER RECEIVER W/ATLAS S-ONE HANDGUARD AERO PRECISION - M4E1 .300BLK ASSEMBLED UPPER RECEIVER W/ATLAS S-ONE HANDGUARD
5 Stars
(5.0)
Add to cart to see price

Select Items In Stock
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
5 Stars
(5.0)

$524.99 - $544.99

In stock
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
5 Stars
(5.0)
Add to cart to see price

Select Items In Stock
Product badge FAXON FIREARMS - BANTAM 9MM LUGER COMPLETE UPPER RECEIVERS FOR AR-15 FAXON FIREARMS - BANTAM 9MM LUGER COMPLETE UPPER RECEIVERS FOR AR-15
5 Stars
(5.0)

$434.68 - $446.87

$492.20 - $506.60

Select Items In Stock
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
5 Stars
(5.0)

$389.99 - $414.99

Select Items In Stock
BROWNELLS - BRN-15 13.7" UPPER RECEIVER ASSEMBLY 5.56MM BROWNELLS - BRN-15 13.7" UPPER RECEIVER ASSEMBLY 5.56MM
5 Stars
(5.0)

$399.99

In stock
Product badge
KAK INDUSTRY LLC. - 5.56X45 NATO COMPLETE UPPER RECEIVER KAK INDUSTRY LLC. - 5.56X45 NATO COMPLETE UPPER RECEIVER
5 Stars
(5.0)

$399.99

In stock
BROWNELLS - BRN-15 16" UPPER RECEIVER ASSEMBLIES 5.56MM BROWNELLS - BRN-15 16" UPPER RECEIVER ASSEMBLIES 5.56MM
5 Stars
(5.0)

$389.99

In stock
LUTH-AR LLC - AR-15 16" LO-DRAG BULL UPPER RECEIVERS LUTH-AR LLC - AR-15 16" LO-DRAG BULL UPPER RECEIVERS
5 Stars
(5.0)

$357.15 - $385.35

In stock
BATTLE ARMS DEVELOPMENT INC. - AR-15 LIGHTWEIGHT BILLET UPPER RECEIVER BATTLE ARMS DEVELOPMENT INC. - AR-15 LIGHTWEIGHT BILLET UPPER RECEIVER
5 Stars
(5.0)

$260.99

In stock
SILENCERCO - SCO15 UPPER RECEIVER SILENCERCO - SCO15 UPPER RECEIVER
5 Stars
(5.0)

$219.00

In stock
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
5 Stars
(5.0)
Add to cart to see price

Select Items In Stock
LUTH-AR LLC - AR-308 A3 STRIPPED UPPER RECEIVER LUTH-AR LLC - AR-308 A3 STRIPPED UPPER RECEIVER
5 Stars
(5.0)

$150.39

In stock
SPIKES TACTICAL - AR-15 9MM UPPER RECEIVER SPIKES TACTICAL - AR-15 9MM UPPER RECEIVER
5 Stars
(5.0)

$112.99

In stock
ZRO DELTA - AR-15 FORGED M4 UPPER RECEIVER 5.56MM ZRO DELTA - AR-15 FORGED M4 UPPER RECEIVER 5.56MM
5 Stars
(5.0)

$69.99

In stock
Product badge
DANIEL DEFENSE - M4A1 RIII 5.56X45MM STRIPPED UPPER RECEIVER DANIEL DEFENSE - M4A1 RIII 5.56X45MM STRIPPED UPPER RECEIVER
5 Stars
(4.9)

$899.99

In stock
FIGHTLITE INDUSTRIES - MCR BELT-FED UPPER RECEIVER FULL AUTO FIGHTLITE INDUSTRIES - MCR BELT-FED UPPER RECEIVER FULL AUTO
5 Stars
(4.8)
Add to cart to see price

In stock
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

Select Items In Stock
Products: – of 190