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Best Rated AR 15 Upper Receivers | AR 15 Complete Uppers | AR 15 Upper Receiver Kits — 118 products / 375 models

Browse the best AR 15 upper receivers according to real customer reviews. These AR15 uppers are made with high-quality materials and expert craftsmanship from top brands like Aero Precision and Radical Firearms. We carry a wide variety of AR 15 parts including complete AR 15 upper receivers and AR 15 upper assemblies that include other essential parts like dust covers, ejection port doors, forward assist button, and more. If you want to customize your build from scratch, we also have stripped AR 15 uppers that only include the barebone essentials.image

Shop for the top-rated AR 15 upper receivers and complete assemblies to complete your build with some of the best-reviewed parts available. Make sure to check out our AR-15 How-to Guides to learn more about how to clean and build an AR 15 upper receiver.

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Image of Stern Defense AR-15 10 inch Assembled Upper Receiver, 8.5 in 9mm Barrel w/MLOK Rail Stern Defense AR-15 10 inch Assembled Upper Receiver, 8.5 in 9mm Barrel w/MLOK Rail (5) List: $486.45 (Save $10.00) $476.45 Best Rated
Image of Jacob Grey Firearms .300 Blackout Complete Upper Assembly Jacob Grey Firearms .300 Blackout Complete Upper Assembly (2) List: $825.00 (Save 24%) $630.49 Blazin' Deal
Image of V Seven AR-15 Enlightened Upper Receiver, 7075 Aluminum V Seven AR-15 Enlightened Upper Receiver, 7075 Aluminum (6) List: $296.00 (Save $8.88) $287.12 Free 2 Day Shipping
Image of R&D Precision PW9 9mm Gen 1 Bufferless Upper Kit R&D Precision PW9 9mm Gen 1 Bufferless Upper Kit (15) List: $559.99 (Save 11%) $499.99 Best Rated
Image of Stern Defense AR-15 6 inch Assembled 9mm Upper Receiver w/ 8 inch MLOK Rail Stern Defense AR-15 6 inch Assembled 9mm Upper Receiver w/ 8 inch MLOK Rail (5) List: $470.45 (Save $10.00) $460.45 Free 2 Day Shipping
Image of Aero Precision M4E1 Threaded 18in .223 Wylde Fluted Barrel w/ ATLAS S-ONE Handguard Complete Upper Receiver with Flash Hider made-in-usa-flag 2 models Aero Precision M4E1 Threaded 18in .223 Wylde Fluted Barrel w/ ATLAS S-ONE Handguard Complete Upper Receiver with Flash Hider (7) As Low As (Save 10%) $609.99 Best Rated
Image of Aero Precision M4E1 Enhanced 18in .223 Wylde Fluted Complete Upper Receiver with Flash Hider made-in-usa-flag 2 models Aero Precision M4E1 Enhanced 18in .223 Wylde Fluted Complete Upper Receiver with Flash Hider (8) As Low As (Save Up to 20%) $549.99
Image of Aero Precision M4E1 Threaded 16in .300 Blackout w/ ATLAS S-ONE Handguard Complete Upper Receiver with Flash Hider made-in-usa-flag 5 models Aero Precision M4E1 Threaded 16in .300 Blackout w/ ATLAS S-ONE Handguard Complete Upper Receiver with Flash Hider (10) As Low As (Save 10%) $494.99 Best Rated

118 Products in Best Rated AR15 Upper Receivers

Showing 1 - 60 of 118 products (827 models)
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Image of Geissele Super Duty Mod1 11.5in Complete Upper 2 models Geissele Super Duty Mod1 11.5in Complete Upper (7) As Low As (Save Up to $107.86) $1,188.81 Blazin' Deal
Image of Daniel Defense DDM4 300 S, URG, 10.3in, 300 AAC Blackout Complete Upper Receiver w/ Flash Hider Daniel Defense DDM4 300 S, URG, 10.3in, 300 AAC Blackout Complete Upper Receiver w/ Flash Hider (16) List: $1,452.00 (Save $101.00) $1,351.00
Image of Geissele USASOC AR15/M4/M16 Upper Receiver Complete Group made-in-usa-flag Geissele USASOC AR15/M4/M16 Upper Receiver Complete Group (38) List: $1,479.00 (Save $110.92) $1,368.08 Blazin' Deal
Image of Daniel Defense MK18, URG, 10.3in 5.56 Complete Upper Receiver w/ Flash Hider 3 models Daniel Defense MK18, URG, 10.3in 5.56 Complete Upper Receiver w/ Flash Hider (34) As Low As (Save Up to 24%) $1,159.00 Final Sale
Image of LaRue Tactical Complete AR-15 Match Grade 16in 5.56x45mm Upper Receiver LaRue Tactical Complete AR-15 Match Grade 16in 5.56x45mm Upper Receiver (6) $1,299.99
Image of Geissele Super Duty Mod1 14.5in Complete Upper 2 models Geissele Super Duty Mod1 14.5in Complete Upper (6) As Low As (Save Up to $107.86) $1,188.81 Blazin' Deal
Image of Geissele Super Duty Mod1 16in Complete Upper 2 models Geissele Super Duty Mod1 16in Complete Upper (6) As Low As (Save Up to $107.86) $1,188.81 Blazin' Deal
Image of Daniel Defense DD4 RIIIS URG 11.5 inch 5.56x45mm NATO Upper Receiver with Flash Hider Assembly 2 models Daniel Defense DD4 RIIIS URG 11.5 inch 5.56x45mm NATO Upper Receiver with Flash Hider Assembly (6) List: $1,517.00 (Save $105.00) $1,412.00
Image of Daniel Defense DDM4 V7 16 inch 5.56mm NATO Upper Receiver Daniel Defense DDM4 V7 16 inch 5.56mm NATO Upper Receiver (11) List: $1,300.00 (Save $92.00) $1,208.00
Image of Daniel Defense DDM4 V7 S 11.5in 5.56 Complete Upper Receiver w/ Flash Hider Daniel Defense DDM4 V7 S 11.5in 5.56 Complete Upper Receiver w/ Flash Hider (18) List: $1,300.00 $1,208.00
Image of Primary Weapons Systems MK111 MOD2-M, .223 Wylde, 11.85 in Upper Receiver Primary Weapons Systems MK111 MOD2-M, .223 Wylde, 11.85 in Upper Receiver (5) List: $1,399.95 (Save $100.00) $1,299.95
Image of OpticsPlanet Exclusive Daniel Defense Custom Upper Receiver 2 models OpticsPlanet Exclusive Daniel Defense Custom Upper Receiver (97) As Low As (Save Up to 28%) $933.91 Blazin' Deal
Image of Daniel Defense M4A1 FSP 14.5in 5.56 Nato Upper Receiver Group Daniel Defense M4A1 FSP 14.5in 5.56 Nato Upper Receiver Group (6) List: $1,619.00 (Save $113.00) $1,506.00
Image of Daniel Defense DDM4V7 LW, URG, LW, 5.56mm, 1/7, LPG, MFR XS M-LOK Rail 15.0, DDFH Complete Upper Receiver w/ Flash Hider, 16in Daniel Defense DDM4V7 LW, URG, LW, 5.56mm, 1/7, LPG, MFR XS M-LOK Rail 15.0, DDFH Complete Upper Receiver w/ Flash Hider, 16in (19) List: $1,300.00 $1,208.00
Image of Radian Weapons Model 1 Complete Upper Receiver made-in-usa-flag 24 models Radian Weapons Model 1 Complete Upper Receiver (7) As Low As (Save Up to 14%) $1,829.95
Image of Daniel Defense M4A1 14.5 in Barrel 5.56mm NATO Upper Receiver Group 2 models Daniel Defense M4A1 14.5 in Barrel 5.56mm NATO Upper Receiver Group (6) As Low As (Save Up to 16%) $1,349.00 Final Sale
Image of Faxon Firearms ARAK-21 Complete Upper Receiver 3 models Faxon Firearms ARAK-21 Complete Upper Receiver (8) As Low As (Save Up to 29%) $852.86 Blazin' Deal
Image of Aero Precision M4E1 Threaded 18in .223 Wylde Fluted Barrel w/ ATLAS S-ONE Handguard Complete Upper Receiver with Flash Hider made-in-usa-flag 2 models Aero Precision M4E1 Threaded 18in .223 Wylde Fluted Barrel w/ ATLAS S-ONE Handguard Complete Upper Receiver with Flash Hider (7) As Low As (Save 10%) $609.99
Image of Maxim Defense Industries MDX 505 PDX SCW PDW Brace Upper Kit made-in-usa-flag 6 models Maxim Defense Industries MDX 505 PDX SCW PDW Brace Upper Kit (7) List: $1,795.00 (Save Up to 12%) $1,615.50
Image of Aero Precision M5E1 20in .308 Barrel Complete Upper Receiver with Flash Hider made-in-usa-flag 6 models Aero Precision M5E1 20in .308 Barrel Complete Upper Receiver with Flash Hider (25) As Low As (Save Up to 30%) $489.99
Image of Bravo Company AR-15/M4 Complete Upper Receiver Assembly Bravo Company AR-15/M4 Complete Upper Receiver Assembly (33) List: $149.00 (Save $5.01) $143.99
Image of Aero Precision M4E1 16in 5.56 ATLAS S-ONE M-LOK Complete Upper Receiver with Flash Hider made-in-usa-flag 5 models Aero Precision M4E1 16in 5.56 ATLAS S-ONE M-LOK Complete Upper Receiver with Flash Hider (17) As Low As (Save Up to 21%) $459.99
Image of Aero Precision EPC-9 16in 9mm Threaded Complete Upper Receiver with Flash Hider made-in-usa-flag 4 models Aero Precision EPC-9 16in 9mm Threaded Complete Upper Receiver with Flash Hider (6) As Low As (Save 10%) $529.99
Image of Aero Precision AR15 16in 5.56 Complete Upper Receiver with Flash Hider with Pinned FSB, M4 Handguard made-in-usa-flag 4 models Aero Precision AR15 16in 5.56 Complete Upper Receiver with Flash Hider with Pinned FSB, M4 Handguard (14) As Low As (Save 10%) $394.99
Image of Aero Precision M4E1 5.56 NATO No Forward Assist Enhanced Upper Receiver made-in-usa-flag 2 models Aero Precision M4E1 5.56 NATO No Forward Assist Enhanced Upper Receiver (6) As Low As (Save Up to 11%) $169.99
Image of IMG AR-10 .308 12 Gauge 19in Complete Upper Receiver w/Two 5 Round Magazine IMG AR-10 .308 12 Gauge 19in Complete Upper Receiver w/Two 5 Round Magazine (13) List: $599.99 (Save $30.00) $569.99
Image of Aero Precision M4E1 223 Remington/5.56 NATO Enhanced Upper Receiver made-in-usa-flag 4 models Aero Precision M4E1 223 Remington/5.56 NATO Enhanced Upper Receiver (25) As Low As (Save Up to 10%) $199.99
Image of Aero Precision AR15 16in 5.56 Complete Upper Receiver with Flash Hider w/Magpul MOE Handguard made-in-usa-flag 4 models Aero Precision AR15 16in 5.56 Complete Upper Receiver with Flash Hider w/Magpul MOE Handguard (9) As Low As (Save 10%) $409.99
Image of Radian Weapons Upper & Hand Guard Set made-in-usa-flag 25 models Radian Weapons Upper & Hand Guard Set (11) As Low As (Save Up to 22%) $769.95 Free 2 Day Shipping
Image of TRYBE Defense AR-15 5.56x45mm NATO Upper Receiver 2 models TRYBE Defense AR-15 5.56x45mm NATO Upper Receiver (49) As Low As (Save Up to 41%) $325.49 Blazin' Deal
Image of Aero Precision M4E1 16in .300 Blackout Barrel Complete Upper Receiver with Flash Hider made-in-usa-flag 8 models Aero Precision M4E1 16in .300 Blackout Barrel Complete Upper Receiver with Flash Hider (12) As Low As (Save Up to 22%) $441.99
Image of Aero Precision M5E1 18in .308 Win/7.62x51mm NATO 4150 Chrome Moly V Complete Upper Receiver made-in-usa-flag Aero Precision M5E1 18in .308 Win/7.62x51mm NATO 4150 Chrome Moly V Complete Upper Receiver (6) List: $690.00 (Save 30%) $479.99
Image of TacFire Stripped AR-15 5.56x45mm NATO Upper Receiver made-in-usa-flag TacFire Stripped AR-15 5.56x45mm NATO Upper Receiver (26) List: $112.99 (Save 38%) $69.99
Image of Aero Precision M4E1 AR-15 16in 5.56 Mid Barrel Complete Upper Receiver with Flash Hider made-in-usa-flag 6 models Aero Precision M4E1 AR-15 16in 5.56 Mid Barrel Complete Upper Receiver with Flash Hider (25) As Low As (Save Up to 15%) $454.74
Image of Aero Precision M4E1 16in .223 Wylde Mid Barrel Complete Upper Receiver with Flash Hider made-in-usa-flag 5 models Aero Precision M4E1 16in .223 Wylde Mid Barrel Complete Upper Receiver with Flash Hider (5) As Low As (Save Up to 23%) $449.99
Image of Aero Precision M4E1 Threaded 8in .300 Blackout Complete Upper Receiver with Flash Hider made-in-usa-flag 4 models Aero Precision M4E1 Threaded 8in .300 Blackout Complete Upper Receiver with Flash Hider (19) As Low As (Save 10%) $534.99
Image of Faxon Firearms Bantam 10.5 in Complete Upper Receiver Faxon Firearms Bantam 10.5 in Complete Upper Receiver (7) List: $535.00 (Save $42.80) $492.20
Image of Aero Precision M4E1 16in Threaded 5.56x45mm Complete Upper Receiver with Flash Hider made-in-usa-flag 6 models Aero Precision M4E1 16in Threaded 5.56x45mm Complete Upper Receiver with Flash Hider (15) As Low As (Save Up to 21%) $489.99 Free 2 Day Shipping
Image of R&D Precision PW9 9mm Gen 1 Bufferless Upper Kit R&D Precision PW9 9mm Gen 1 Bufferless Upper Kit (15) List: $559.99 (Save 11%) $499.99
Image of Aero Precision M5 24in 6.5 Creedmoor SS Complete Upper Receiver with Flash Hider w/ ATLAS R-ONE Handguard made-in-usa-flag 2 models Aero Precision M5 24in 6.5 Creedmoor SS Complete Upper Receiver with Flash Hider w/ ATLAS R-ONE Handguard (7) As Low As (Save Up to 23%) $704.99
Image of Aero Precision AR15 16in 5.56 Complete Upper Receiver with Flash Hider w/Magpul MOE SL Handguard made-in-usa-flag 4 models Aero Precision AR15 16in 5.56 Complete Upper Receiver with Flash Hider w/Magpul MOE SL Handguard (7) As Low As (Save 10%) $354.99
Image of TRYBE Defense AR-15 16in 7.62x39mm M-LOK Complete Upper Receiver TRYBE Defense AR-15 16in 7.62x39mm M-LOK Complete Upper Receiver (32) List: $389.99 (Save 23%) $299.99
Image of Aero Precision M4E1 16in 5.56 ATLAS R-ONE M-LOK Complete Upper Receiver with Flash Hider made-in-usa-flag 7 models Aero Precision M4E1 16in 5.56 ATLAS R-ONE M-LOK Complete Upper Receiver with Flash Hider (8) As Low As (Save Up to 21%) $549.99
Image of Aero Precision M4E1 AR-15 10.5in 5.56 Rifle Barrel Complete Upper Receiver with Flash Hider made-in-usa-flag 4 models Aero Precision M4E1 AR-15 10.5in 5.56 Rifle Barrel Complete Upper Receiver with Flash Hider (9) As Low As (Save 10%) $459.99
Image of Aero Precision M4E1 No Forward Assist Threaded Stripped Upper Receiver made-in-usa-flag 2 models Aero Precision M4E1 No Forward Assist Threaded Stripped Upper Receiver (9) As Low As (Save Up to 10%) $134.99
Image of Aero Precision M4E1 Threaded 20in 5.56 w/ ATLAS S-ONE Handguard Complete Upper Receiver with Flash Hider made-in-usa-flag 2 models Aero Precision M4E1 Threaded 20in 5.56 w/ ATLAS S-ONE Handguard Complete Upper Receiver with Flash Hider (21) As Low As (Save Up to 23%) $549.99
Image of Aero Precision M4E1 Threaded 10in .300 Blackout Complete Upper Receiver with Flash Hider made-in-usa-flag 4 models Aero Precision M4E1 Threaded 10in .300 Blackout Complete Upper Receiver with Flash Hider (24) As Low As (Save 10%) $554.99
Image of Aero Precision M4E1 Threaded Assembled Upper Receiver made-in-usa-flag 6 models Aero Precision M4E1 Threaded Assembled Upper Receiver (80) As Low As (Save Up to 10%) $159.99 Free 2 Day Shipping
Image of Jacob Grey Firearms Ultralight 300 BO Complete Upper Assembly 3 models Jacob Grey Firearms Ultralight 300 BO Complete Upper Assembly (6) As Low As (Save Up to 56%) $381.49 Blazin' Deal
Image of Primary Weapons Systems MK114 MOD 1-M .223 Wylde, 14.5in bbl Upper Receiver Primary Weapons Systems MK114 MOD 1-M .223 Wylde, 14.5in bbl Upper Receiver (6) List: $1,129.95 (Save $80.00) $1,049.95
Image of Aero Precision M4E1 AR-15 Threaded Stripped Upper Receiver made-in-usa-flag 5 models Aero Precision M4E1 AR-15 Threaded Stripped Upper Receiver (26) As Low As (Save Up to 28%) $107.99 Final Sale
Image of Wilson Combat AR-15 Billet Stripped Upper Receiver Wilson Combat AR-15 Billet Stripped Upper Receiver (8) List: $251.98 (Save 12%) $221.95 Free 2 Day Shipping
Image of Aero Precision M5 .308 Assembled Upper Receiver made-in-usa-flag 6 models Aero Precision M5 .308 Assembled Upper Receiver (43) As Low As (Save Up to 11%) $159.99
Image of Stern Defense AR-15 10 inch Assembled Upper Receiver, 8.5 in 9mm Barrel w/MLOK Rail Stern Defense AR-15 10 inch Assembled Upper Receiver, 8.5 in 9mm Barrel w/MLOK Rail (5) List: $486.45 (Save $10.00) $476.45
Image of Rock River Arms Forged A2 Upper Receiver Assembly Rock River Arms Forged A2 Upper Receiver Assembly (5) List: $265.19 (Save 13%) $229.99
Image of Aero Precision M5E1 .308 Enhanced Upper Receiver made-in-usa-flag 4 models Aero Precision M5E1 .308 Enhanced Upper Receiver (37) As Low As (Save Up to 10%) $199.99 Free 2 Day Shipping
Image of Aero Precision M5 24in 6.5 Creedmoor SS Complete Upper Receiver with Flash Hider w/ ATLAS S-ONE Handguard made-in-usa-flag 2 models Aero Precision M5 24in 6.5 Creedmoor SS Complete Upper Receiver with Flash Hider w/ ATLAS S-ONE Handguard (6) As Low As (Save Up to 23%) $709.99
Image of Aero Precision M4E1 Enhanced 7in 5.56 Pistol Length Complete Upper Receiver with Flash Hider made-in-usa-flag Aero Precision M4E1 Enhanced 7in 5.56 Pistol Length Complete Upper Receiver with Flash Hider (5) List: $459.99 (Save 15%) $389.99
Image of Aero Precision M4E1 10in .300 Barrel Complete Upper with Flash Hider made-in-usa-flag 4 models Aero Precision M4E1 10in .300 Barrel Complete Upper with Flash Hider (9) As Low As (Save 10%) $474.99
Image of POF USA Complete P-415 Edge 16.5 in Barrel 5.56x45mm NATO Upper Receiver 4 models POF USA Complete P-415 Edge 16.5 in Barrel 5.56x45mm NATO Upper Receiver (6) As Low As (Save Up to $86.00) $1,359.00
Showing 1 - 60 of 118 products (827 models)
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Best Rated AR15 Upper Receivers How To Guides View All

How to Build a Pistol Caliber Carbine by Ethan L
How To Build An AR15 Upper Receiver by OpticsPlanet Guest Expert
How to Clean and Maintain an AR15 by Chase B
Which AR15 Upper Should You Buy? by Corey F.
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