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Upper Receivers 71 Items

Upper Receivers Up To 21% Off— 71 Products In Stock / 27 Models

Upper Receivers are purpose-built components designed to deliver consistent performance for the specific needs of recreational shooters, hunters, and professionals. Our lineup includes 71 in-stock products with savings Up To 21% Off on qualifying orders, and all Brownells brand products backed by our Forever Guarantee®.

We carry Upper Receivers from 30 of the most respected brands in the industry, including AERO PRECISION, BROWNELLS, BROWNELLS BUNDLES, DANIEL DEFENSE. Verified buyers rate our Upper Receivers 4.5 Ratings out of 942 Reviews from verified buyers, reflecting the durability and craftsmanship that earn repeat purchases.

From the range to the field, every Upper Receivers product we ship meets the standards our customers have trusted since 1939. Continue browsing our full selection of Rifle Receivers & Parts for more great products at Brownells.

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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)

$1,525.00

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Product badge DANIEL DEFENSE - M4A1 SOCOM BLOCK II 5.56 NATO STRIPPED UPPER RECEIVER DANIEL DEFENSE - M4A1 SOCOM BLOCK II 5.56 NATO STRIPPED UPPER RECEIVER
5 Stars
(4.6)

$899.99 - $949.99

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

$899.99

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)

$1,325.00 - $1,450.00

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Product badge PRIMARY WEAPONS - BROWNELLS EXCLUSIVE MK1 ALPHA LT 223 WYLDE COMPLETE UPPER PRIMARY WEAPONS - BROWNELLS EXCLUSIVE MK1 ALPHA LT 223 WYLDE COMPLETE UPPER
5 Stars
(5.0)

$1,349.00

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
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$729.99 - $999.99

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

$749.99

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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
(3.5)

$599.99

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Product badge COLT - M4 5.56 UPPER RECEIVER GROUPS COLT - M4 5.56 UPPER RECEIVER GROUPS
5 Stars
(4.3)

$444.99 - $851.99

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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
(5.0)

$1,187.50 - $1,282.50

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Product badge 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
(0.0)

$1,523.69 - $1,678.89

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Product badge 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
(0.0)

$1,523.69 - $1,678.89

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Product badge BROWNELLS BUNDLES - DD 14.5" M4A1 FSP UPPER RECEIVER W/ EOTECH OPTICS BROWNELLS BUNDLES - DD 14.5" M4A1 FSP UPPER RECEIVER W/ EOTECH OPTICS
5 Stars
(0.0)

$1,523.69 - $1,678.89

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Product badge PRIMARY WEAPONS - MK114 MOD 2-M 223 WYLDE COMPLETE UPPER RECEIVER PRIMARY WEAPONS - MK114 MOD 2-M 223 WYLDE COMPLETE UPPER RECEIVER
5 Stars
(0.0)

$1,399.95

In stock
Product badge PRIMARY WEAPONS - MK114 MOD 1-M 223 WYLDE COMPLETE UPPER RECEIVER PRIMARY WEAPONS - MK114 MOD 1-M 223 WYLDE COMPLETE UPPER RECEIVER
5 Stars
(0.0)

$1,129.95

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Product badge CMMG - RESOLUTE® MK4 300 BLACKOUT ASSEMBLED UPPER RECEIVER W/P&W BRAKE CMMG - RESOLUTE® MK4 300 BLACKOUT ASSEMBLED UPPER RECEIVER W/P&W BRAKE
5 Stars
(0.0)

$595.38

In stock
Product badge BROWNELLS - BRN-4® UPPER RECEIVER ASSEMBLIES WITH CHROME LINED BARRELS BROWNELLS - BRN-4® UPPER RECEIVER ASSEMBLIES WITH CHROME LINED BARRELS
5 Stars
(3.9)

$1,096.99 - $1,175.99

$1,299.99 - $1,399.99

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Product badge BROWNELLS - BRN-4® UPPER RECEIVER ASSEMBLIES BROWNELLS - BRN-4® UPPER RECEIVER ASSEMBLIES
5 Stars
(3.6)

$1,019.99 - $1,199.99

$1,199.99

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Product badge BROWNELLS - BRN-4® COMPLETE UPPER RECEIVERS BROWNELLS - BRN-4® COMPLETE UPPER RECEIVERS
5 Stars
(4.2)

$1,124.99 - $1,299.99

$1,299.99

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Product badge COLT - M4 UPPER RECEIVER 5.56 SOCOM BARREL COLT - M4 UPPER RECEIVER 5.56 SOCOM BARREL
5 Stars
(4.0)

$541.99

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Product badge 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)

$484.99 - $599.99

Out of Stock
Product badge 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
5 Stars
(4.5)

$1,140.00 - $1,235.00

Out of Stock
Product badge MEAN ARMS - BEARING DELAY 9MM LUGER COMPLETE UPPER RECEIVER MEAN ARMS - BEARING DELAY 9MM LUGER COMPLETE UPPER RECEIVER
5 Stars
(5.0)

$1,399.99 - $1,499.99

Out of Stock
Product badge 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
5 Stars
(4.0)

$565.99 - $574.99

Out of Stock
Product badge KNIGHT'S ARMAMENT - SR-25 K7 6.5MM CREEDMOOR ASSEMBLED UPPPER RECEIVER KNIGHT'S ARMAMENT - SR-25 K7 6.5MM CREEDMOOR ASSEMBLED UPPPER RECEIVER
5 Stars
(0.0)

$3,146.40

Out of Stock
Product badge KNIGHT'S ARMAMENT - SR-25 K5 7.62 NATO/.308 ASSEMBLED UPPER RECEIVER KNIGHT'S ARMAMENT - SR-25 K5 7.62 NATO/.308 ASSEMBLED UPPER RECEIVER
5 Stars
(0.0)

$3,146.40

Out of Stock
Product badge KNIGHT'S ARMAMENT - SR-15 KS-2 5.56 NATO ASSEMBLED UPPER RECEIVER KNIGHT'S ARMAMENT - SR-15 KS-2 5.56 NATO ASSEMBLED UPPER RECEIVER
5 Stars
(0.0)

$1,710.00

Out of Stock
Product badge 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
5 Stars
(0.0)

$1,140.00 - $1,235.00

Out of Stock
Product badge LUTH-AR LLC - AR-15 14.5" SOCOM UPPER RECEIVER 1-7 LUTH-AR LLC - AR-15 14.5" SOCOM UPPER RECEIVER 1-7
5 Stars
(4.0)

 

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