LABOR DAY DEALS START NOW!
Exclusive Offers + 12% Off Almost Everything Else Use Code: LABORDAY12

LABOR DAY DEALS START NOW!
Exclusive Savings + 12% Off Almost Everything Else Use Code: LABORDAY12

Daily Deal: Rise Armament 1776 Edition AR Trigger $149.00 $125.99 - Get Yours! 

3993-Daniel-Defense-Uppers-CP-Hero-1920x385
3993-Daniel-Defense-Uppers-CP-Hero-768x450
Brownells Exclusive
DANIEL DEFENSE
MK18 & M4A1
STRIPPED UPPERS
JUST $694.99 THIS LABOR DAY
Featuring RIS II & RIS III rails, cold hammer forged barrels & legendary Daniel Defense quality.
Explore The Uppers
6275 Brownells Banner - New product - _Category Header
6275 Brownells Banner - New product - _Category Header Mobile
SMALLER.
LIGHTER.
STRONGER.
Meet the New
LAW FOLDER GEN S
SMALLER.
LIGHTER.
STRONGER.
Meet the New
LAW FOLDER GEN S
Take A Look
4509 Site Banners - BRN180 Gen-3 Launch_Category Hero
4509 Site Banners - BRN180 Gen-3 Launch_Category Hero Mobile(1)

BROWNELLS
BRN-180® GEN3

You've Been Waiting -Don't Miss Out Again!
Back In Stock!
6294 Brownells Banners - Week 11 - Category Header_Geissele
6294 Brownells Banners - Week 11 - Category Header_Geissele Mobile

THE GOLD STANDARD
OF AR UPGRADES!

Shop Geissele Uppers,Triggers, and Upgrades!
On Sale Now!
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

Upper Receivers 61 Items

Upper Receivers — 61 Products In Stock / 29 Models

Our Upper Receivers selection features 61 in-stock products including from 31 premium brands including AERO PRECISION, BROWNELLS, & BROWNELLS BUNDLES.  Browse our full selction of Rifle Receivers & Parts.

Sort by:
61 Total Products
You're viewing results for:
Products:  1  –  32  of 106
Number of results: 
  • 32
  • 64
  • 96
Product badge
Product badge DANIEL DEFENSE - MK18 STRIPPED SOCOM UPPER RECEIVER DANIEL DEFENSE - MK18 STRIPPED SOCOM UPPER RECEIVER
5 Stars
(4.5)

$694.99

$899.99

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

$694.99

$899.99

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

$694.99

$899.99

In stock
Product badge GEISSELE AUTOMATICS LLC - MK16 URG-I COMPLETE UPPER RECEIVERS 5.56MM GEISSELE AUTOMATICS LLC - MK16 URG-I COMPLETE UPPER RECEIVERS 5.56MM
5 Stars
(4.8)

$1,311.99

$1,525.00

Select Items In Stock
Product badge 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
(4.1)

$1,139.99 - $1,246.99

$1,325.00 - $1,450.00

Select Items In Stock
BROWNELLS - XM177E2 COMPLETE UPPER RECEIVERS BROWNELLS - XM177E2 COMPLETE UPPER RECEIVERS
5 Stars
(4.4)

$806.59 - $859.99

Select Items In Stock
BROWNELLS BUNDLES - BRN-601 20" UPPER W/COLT AR-15 4x21MM OPTIC BROWNELLS BUNDLES - BRN-601 20" UPPER W/COLT AR-15 4x21MM OPTIC
5 Stars
(0.0)

$1,058.99

In stock
BROWNELLS - BRN-601® RETRO COMPLETE UPPER RECEIVER BROWNELLS - BRN-601® RETRO COMPLETE UPPER RECEIVER
5 Stars
(3.6)

$899.99

In stock
LMT DEFENSE - MRP-L M-LOK SPECWAR 5.56MM ASSEMBLED UPPER RECEIVER LMT DEFENSE - MRP-L M-LOK SPECWAR 5.56MM ASSEMBLED UPPER RECEIVER
5 Stars
(5.0)

$940.50

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

$149.99

In stock
BROWNELLS BUNDLES - XM177E2 11.5"\ W/COLT OPTIC BROWNELLS BUNDLES - XM177E2 11.5"\ W/COLT OPTIC
5 Stars
(0.0)

$1,010.99

Select Items In Stock
DANIEL DEFENSE - MK18 5.56 UPPER RECEIVER GROUP COMPLETE DANIEL DEFENSE - MK18 5.56 UPPER RECEIVER GROUP COMPLETE
5 Stars
(5.0)

$1,527.00

Select Items In Stock
BROWNELLS - BRN-15 UPPER RECEIVERS 5.56MM NATO BROWNELLS - BRN-15 UPPER RECEIVERS 5.56MM NATO
5 Stars
(3.8)

$399.99 - $429.99

Select Items In Stock
DANIEL DEFENSE - DDM4V7 S 11.5" 5.56MM NATO UPPER RECEIVER BLACK DANIEL DEFENSE - DDM4V7 S 11.5" 5.56MM NATO UPPER RECEIVER BLACK
5 Stars
(0.0)

$1,281.00

In stock
PRIMARY WEAPONS - MK111 MOD 2-M 223 WYLDE COMPLETE UPPER RECEIVER PRIMARY WEAPONS - MK111 MOD 2-M 223 WYLDE COMPLETE UPPER RECEIVER
5 Stars
(0.0)

$1,399.95

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
LUTH-AR LLC - SLICK SIDE A1 5.56 NATO ASSEMBLED UPPER RECIEVER LUTH-AR LLC - SLICK SIDE A1 5.56 NATO ASSEMBLED UPPER RECIEVER
5 Stars
(5.0)

$202.05

In stock
CMMG - RESOLUTE® MK4 5.56X45MM NATO ASSEMBLED UPPER RECEIVER CMMG - RESOLUTE® MK4 5.56X45MM NATO ASSEMBLED UPPER RECEIVER
5 Stars
(0.0)

$595.38

In stock
WILSON COMBAT - AR-15 FORGED UPPER RECEIVER WILSON COMBAT - AR-15 FORGED UPPER RECEIVER
5 Stars
(0.0)

$86.99

In stock
LUTH-AR LLC - M16 A1 5.56 NATO STRIPPED UPPER RECEIVER LUTH-AR LLC - M16 A1 5.56 NATO STRIPPED UPPER RECEIVER
5 Stars
(0.0)

$164.45

In stock
LUTH-AR LLC - AR-15 A2 UPPER RECEIVER LUTH-AR LLC - AR-15 A2 UPPER RECEIVER
5 Stars
(3.0)

$103.35

In stock
PRIMARY WEAPONS - AR-15 MK1 MOD 1-M UPPER RECEIVER ASSEMBLY 223 WYLDE M-LOK PRIMARY WEAPONS - AR-15 MK1 MOD 1-M UPPER RECEIVER ASSEMBLY 223 WYLDE M-LOK
5 Stars
(5.0)

$1,129.95

In stock
Product badge COLT - M4 ENHANCED PATROL RIFLE 5.56 UPPER RECEIVER GROUPS COLT - M4 ENHANCED PATROL RIFLE 5.56 UPPER RECEIVER GROUPS
5 Stars
(5.0)

$729.99 - $999.99

Select Items 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
(4.0)

$1,757.00 - $1,777.00

Select Items 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)

$1,765.00

In stock
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
(1.0)

$527.85 - $690.00

$621.00

Select Items In Stock
PRIMARY WEAPONS - MK114 MOD 2-M 223 WYLDE COMPLETE UPPER RECEIVER PRIMARY WEAPONS - MK114 MOD 2-M 223 WYLDE COMPLETE UPPER RECEIVER
5 Stars
(5.0)

$1,399.95

In stock
Product badge COLT - M4 UPPER RECEIVER ASSEMBLY NO HANDGUARDS COLT - M4 UPPER RECEIVER ASSEMBLY NO HANDGUARDS
5 Stars
(5.0)

$749.99

Select Items In Stock
FIGHTLITE INDUSTRIES - MCR DUAL-FEED 5.56X45 NATO UPPER RECEIVER FIGHTLITE INDUSTRIES - MCR DUAL-FEED 5.56X45 NATO UPPER RECEIVER
5 Stars
(0.0)

$6,299.99 - $6,399.99

Select Items In Stock
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
5 Stars
(0.0)

$1,709.00 - $1,729.00

In stock
PRIMARY WEAPONS - MK116 MOD 2-M 223 WYLDE COMPLETE UPPER RECEIVER PRIMARY WEAPONS - MK116 MOD 2-M 223 WYLDE COMPLETE UPPER RECEIVER
5 Stars
(0.0)

$1,399.95

In stock
PRIMARY WEAPONS - MK116 MOD 2-M 7.62X39MM COMPLETE UPPER RECEIVER PRIMARY WEAPONS - MK116 MOD 2-M 7.62X39MM COMPLETE UPPER RECEIVER
5 Stars
(0.0)

$1,399.95

In stock
Products:  1  –  32  of 106