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Upper Receivers 226 Items

Browse 149 Upper Receivers In Stock Up To 30% Off

Brownells Upper Receivers products have an average rating of 4.6/5 and 592 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 - M4A1 STRIPPED SOCOM UPPER RECEIVER 14.5IN 5.56 DANIEL DEFENSE - M4A1 STRIPPED SOCOM UPPER RECEIVER 14.5IN 5.56
5 Stars
(4.6)

$799.99 - $999.99

In stock
COLT - M4 5.56 UPPER RECEIVER GROUPS COLT - M4 5.56 UPPER RECEIVER GROUPS
5 Stars
(4.2)

$479.99 - $909.99

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FOXTROT MIKE PRODUCTS - AR-15 9MM UPPER RECEIVERS M-LOK ASSEMBLED FOXTROT MIKE PRODUCTS - AR-15 9MM UPPER RECEIVERS M-LOK ASSEMBLED
5 Stars
(4.9)
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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)

$849.99

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

$183.99

In stock
WMD GUNS - AR-15/M16 NiB-X® COATED UPPER RECEIVER WMD GUNS - AR-15/M16 NiB-X® COATED UPPER RECEIVER
5 Stars
(3.7)

$166.99 - $167.49

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COLT - AR-15 LE6960-CCU UPPER RECEIVER 5.56 M-LOK COLT - AR-15 LE6960-CCU UPPER RECEIVER 5.56 M-LOK
5 Stars
(4.0)

$659.99

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AERO PRECISION - AR-15/M16 ASSEMBLED UPPER RECEIVER AERO PRECISION - AR-15/M16 ASSEMBLED UPPER RECEIVER
5 Stars
(4.5)

$124.99 - $144.99

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AERO PRECISION - 308 AR M5 UPPER RECEIVER AERO PRECISION - 308 AR M5 UPPER RECEIVER
5 Stars
(4.6)

$194.99 - $209.99

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BROWNELLS - AR-15/M16 SLICKSIDE 601 UPPER RECEIVER BROWNELLS - AR-15/M16 SLICKSIDE 601 UPPER RECEIVER
5 Stars
(3.1)

$156.99

In stock
BRAVO COMPANY - AR-15/M4 FLATTOP UPPER RECEIVER ASSEMBLY BRAVO COMPANY - AR-15/M4 FLATTOP UPPER RECEIVER ASSEMBLY
5 Stars
(4.4)

$142.99

In stock
BROWNELLS - AR-15 M16 A1 UPPER RECEIVER BROWNELLS - AR-15 M16 A1 UPPER RECEIVER
5 Stars
(4.8)

$159.99

In stock
Product badge AERO PRECISION - AR-15/M16 STRIPPED UPPER RECEIVER AERO PRECISION - AR-15/M16 STRIPPED UPPER RECEIVER
5 Stars
(4.9)

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Product badge PRIMARY WEAPONS - MK116 PRO COMPLETE UPPER RECEIVER ASSEMBLY .223 WYLDE PRIMARY WEAPONS - MK116 PRO COMPLETE UPPER RECEIVER ASSEMBLY .223 WYLDE
5 Stars
(4.4)

$649.99

$746.99

In stock
Product badge FOXTROT MIKE PRODUCTS - MIKE-9 ENHANCED FORWARD CHARGING UPPER RECEIVERS FOXTROT MIKE PRODUCTS - MIKE-9 ENHANCED FORWARD CHARGING UPPER RECEIVERS
5 Stars
(4.8)
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FOXTROT MIKE PRODUCTS - AR-15 MIKE-9 COMPLETE MONOLITHIC COLT STYLE UPPER RECEIVER 9MM FOXTROT MIKE PRODUCTS - AR-15 MIKE-9 COMPLETE MONOLITHIC COLT STYLE UPPER RECEIVER 9MM
5 Stars
(4.4)

$375.99 - $399.00

In stock
FOXTROT MIKE PRODUCTS - MIKE-9 ENHANCED PISTOL UPPER RECEIVERS FOXTROT MIKE PRODUCTS - MIKE-9 ENHANCED PISTOL UPPER RECEIVERS
5 Stars
(4.9)

$299.00 - $329.00

In stock
AERO PRECISION - AR-15 M4E1 ENHANCED UPPER RECEIVER AERO PRECISION - AR-15 M4E1 ENHANCED UPPER RECEIVER
5 Stars
(4.5)

$199.99

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AERO PRECISION - AR-15 ASSEMBLED UPPER RECEIVER 16" 5.56MM MID-LENGTH AERO PRECISION - AR-15 ASSEMBLED UPPER RECEIVER 16" 5.56MM MID-LENGTH
5 Stars
(4.3)

$404.99

In stock
BROWNELLS - BRN-4® UPPER RECEIVER ASSEMBLIES BROWNELLS - BRN-4® UPPER RECEIVER ASSEMBLIES
5 Stars
(3.4)

$1,199.00

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COLT - M16 20 INCH 5.56 COMPLETE UPPER RECEIVER GROUPS COLT - M16 20 INCH 5.56 COMPLETE UPPER RECEIVER GROUPS
5 Stars
(4.9)

$499.99 - $699.99

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SONS OF LIBERTY GUN WORKS - AR-15 EAST INDIA UPPER RECEIVER STARTER KITS W/ COMBAT GRADE BBL SONS OF LIBERTY GUN WORKS - AR-15 EAST INDIA UPPER RECEIVER STARTER KITS W/ COMBAT GRADE BBL
5 Stars
(4.4)
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Product badge PRIMARY WEAPONS - MK111 PRO UPPER RECEIVER COMPLETE .223 WYLDE PRIMARY WEAPONS - MK111 PRO UPPER RECEIVER COMPLETE .223 WYLDE
5 Stars
(4.7)

$699.99

$804.99

In stock
CROSS MACHINE TOOL CO., INC. - AR-15/M16 BILLET UPPER RECEIVER CROSS MACHINE TOOL CO., INC. - AR-15/M16 BILLET UPPER RECEIVER
5 Stars
(4.3)

$209.99

In stock
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