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Huge Memorial Day savings + 15% off your order with code MDAY15 - SHOP NOW

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Upper Receivers 165 Items

Browse 153 Upper Receivers In Stock Up To 46% Off

Brownells Upper Receivers products have an average rating of 4.6/5 and 604 reviews from verified buyers and brands like AERO PRECISION, BROWNELLS, BROWNELLS BUNDLES, & PRIMARY WEAPONS.  Check out all of our Rifle Receivers & Parts products at Brownells today.

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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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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 - MK16 URG-I COMPLETE UPPER RECEIVERS 5.56MM GEISSELE AUTOMATICS LLC - MK16 URG-I COMPLETE UPPER RECEIVERS 5.56MM
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$1,450.00

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SONS OF LIBERTY GUN WORKS - AR-15 SAGE DYNAMICS UPPER RECEIVER ASSEMBLY 5.56 SONS OF LIBERTY GUN WORKS - AR-15 SAGE DYNAMICS UPPER RECEIVER ASSEMBLY 5.56
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$1,199.99

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Product badge 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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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 - $1,059.99

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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
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$1,029.49

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FOXTROT MIKE PRODUCTS - AR-15 MIKE-15 GEN 2 UPPER RECEIVER ASSEMBLY 223 WYLDE FOXTROT MIKE PRODUCTS - AR-15 MIKE-15 GEN 2 UPPER RECEIVER ASSEMBLY 223 WYLDE
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$599.99 - $918.99

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Product badge DANIEL DEFENSE - M4A1 FSP 5.56X45MM STRIPPED UPPER RECEIVER DANIEL DEFENSE - M4A1 FSP 5.56X45MM STRIPPED UPPER RECEIVER
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$849.99

$899.99

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AERO PRECISION - M5E1 ASSEMBLED UPPER RECEIVER 6.5 CREEDMOOR BLACK AERO PRECISION - M5E1 ASSEMBLED UPPER RECEIVER 6.5 CREEDMOOR BLACK
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$759.99 - $779.99

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COLT - M4 UPPER RECEIVER ASSEMBLY NO HANDGUARDS COLT - M4 UPPER RECEIVER ASSEMBLY NO HANDGUARDS
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$749.99

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AERO PRECISION - M4E1 THREADED 6.5 GRENDEL ASSEMBLED UPPER RECEIVER W/ATLAS R-ONE AERO PRECISION - M4E1 THREADED 6.5 GRENDEL ASSEMBLED UPPER RECEIVER W/ATLAS R-ONE
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$509.49 - $689.99

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Product badge BROWNELLS - AR-15/M16 733 C7 11.5" 5.56 UPPER RECEIVER BROWNELLS - AR-15/M16 733 C7 11.5" 5.56 UPPER RECEIVER
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$649.00

$699.00

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AERO PRECISION - M4E1 ASSEMBLED UPPER RECEIVER 5.56MM AERO PRECISION - M4E1 ASSEMBLED UPPER RECEIVER 5.56MM
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$489.99 - $599.99

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AERO PRECISION - M4E1 ASSEMBLED UPPER RECEIVER 18" 5.56 RIFLE LENGTH AERO PRECISION - M4E1 ASSEMBLED UPPER RECEIVER 18" 5.56 RIFLE LENGTH
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$599.99

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Product badge AERO PRECISION - M4E1-T 223 WYLDE ASSEMBLED UPPER RECEIVER AERO PRECISION - M4E1-T 223 WYLDE ASSEMBLED UPPER RECEIVER
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$549.99 - $599.99

$709.99

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AERO PRECISION - M4E1 ASSEMBLED UPPER RECEIVER .300 BLACKOUT BLACK AERO PRECISION - M4E1 ASSEMBLED UPPER RECEIVER .300 BLACKOUT BLACK
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$534.99 - $594.99

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AERO PRECISION - M4E1-T 300 BLACKOUT UPPER ASSEMBLIES AERO PRECISION - M4E1-T 300 BLACKOUT UPPER ASSEMBLIES
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$534.99 - $594.99

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MIDWEST INDUSTRIES, INC. - AR-15 LIGHTWEIGHT UPPER RECEIVER W/ COMBAT RAIL HANDGUARDS MIDWEST INDUSTRIES, INC. - AR-15 LIGHTWEIGHT UPPER RECEIVER W/ COMBAT RAIL HANDGUARDS
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AERO PRECISION - M4E1-T ATLAS R-ONE ASSEMBLED UPPER RECEIVERS 5.56MM AERO PRECISION - M4E1-T ATLAS R-ONE ASSEMBLED UPPER RECEIVERS 5.56MM
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$454.99 - $574.99

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AERO PRECISION - M4E1-T ATLAS R-ONE ASSEMBLED UPPER RECEIVERS 10.5" 5.56MM AERO PRECISION - M4E1-T ATLAS R-ONE ASSEMBLED UPPER RECEIVERS 10.5" 5.56MM
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$534.99 - $569.99

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AERO PRECISION - M4E1 ASSEMBLED UPPER RECEIVER 10.5" 5.56MM CARBINE LENGTH AERO PRECISION - M4E1 ASSEMBLED UPPER RECEIVER 10.5" 5.56MM CARBINE LENGTH
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$534.99 - $554.99

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AERO PRECISION - M4E1 ASSEMBLED UPPER RECEIVERS .300 BLACKOUT AERO PRECISION - M4E1 ASSEMBLED UPPER RECEIVERS .300 BLACKOUT
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$494.99 - $554.99

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AERO PRECISION - M4E1 ASSEMBLED UPPER RECEIVER .223 WYLDE BLACK AERO PRECISION - M4E1 ASSEMBLED UPPER RECEIVER .223 WYLDE BLACK
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$524.99 - $544.99

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