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Best Rated AR 15 Upper Receivers | AR 15 Complete Uppers | AR 15 Upper Receiver Kits — 118 products / 376 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 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 Best Rated
Image of R&D Precision PW9 Colt/Glock 9mm 5 inch Upper Receiver Kit R&D Precision PW9 Colt/Glock 9mm 5 inch Upper Receiver Kit (16) List: $616.89 (Save 11%) $550.98 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
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 (8) 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 18%) $559.99
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

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Image of Geissele Super Duty Mod1 5.56mm, 11.5in Complete Upper 2 models Geissele Super Duty Mod1 5.56mm, 11.5in Complete Upper (10) As Low As (Save Up to $115.99) $1,188.81
Image of Geissele USASOC AR15/M4/M16 Upper Receiver Complete Group made-in-usa-flag Geissele USASOC AR15/M4/M16 Upper Receiver Complete Group (41) List: $1,525.00 (Save 12%) $1,349.00
Image of TacFire Stripped AR-15 5.56x45mm NATO Upper Receiver made-in-usa-flag 2 models TacFire Stripped AR-15 5.56x45mm NATO Upper Receiver (31) As Low As (Save Up to 24%) $69.99 Final Sale
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 (6) List: $1,499.95 (Save $100.00) $1,399.95
Image of Daniel Defense DDM4 V7 16 inch 5.56mm NATO Upper Receiver Daniel Defense DDM4 V7 16 inch 5.56mm NATO Upper Receiver (12) List: $1,300.00 (Save $92.00) $1,208.00
Image of Primary Weapons Systems MK116 MOD 2-M, .223, 16in Upper Receiver Primary Weapons Systems MK116 MOD 2-M, .223, 16in Upper Receiver (6) List: $1,499.95 (Save $100.00) $1,399.95
Image of OpticsPlanet Exclusive Daniel Defense Custom Upper Receiver 2 models OpticsPlanet Exclusive Daniel Defense Custom Upper Receiver (101) As Low As (Save Up to 30%) $909.99 On Sale
Image of Geissele Super Duty Mod1 5.56mm, 16 inch Complete Upper 2 models Geissele Super Duty Mod1 5.56mm, 16 inch Complete Upper (6) As Low As (Save Up to 10%) $1,189.00
Image of Q Sugar Weasel Upper 3 models Q Sugar Weasel Upper (10) As Low As (Save Up to 10%) $1,309.00 Final Sale
Image of Daniel Defense M4A1 14.5 in Barrel 5.56mm NATO Upper Receiver Group Daniel Defense M4A1 14.5 in Barrel 5.56mm NATO Upper Receiver Group (7) List: $1,612.00 (Save $113.00) $1,499.00
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 (35) As Low As (Save Up to 19%) $1,229.00 Final Sale
Image of Spikes Tactical M4 Flat Top Upper made-in-usa-flag Spikes Tactical M4 Flat Top Upper (52) List: $115.00 (Save 10%) $103.50
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 (16) List: $599.99 (Save $50.00) $549.99
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 2 models 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 (20) As Low As (Save Up to 24%) $989.99 Final Sale
Image of Primary Weapons Systems MK111 MOD1-M .223 Wylde, 11.85in bbl Upper Receiver Primary Weapons Systems MK111 MOD1-M .223 Wylde, 11.85in bbl Upper Receiver (6) List: $1,209.95 (Save $80.00) $1,129.95
Image of Aero Precision M5 20in .308 CMV Complete Upper Receiver w/ Flash Hider & ATLAS S-ONE Handguard made-in-usa-flag 2 models Aero Precision M5 20in .308 CMV Complete Upper Receiver w/ Flash Hider & ATLAS S-ONE Handguard (11) As Low As (Save Up to 19%) $629.99
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 (8) List: $1,795.00 (Save Up to 12%) $1,615.50
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 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 Radian Weapons Upper & Hand Guard Set made-in-usa-flag 25 models Radian Weapons Upper & Hand Guard Set (12) As Low As (Save Up to 22%) $769.95 Free 2 Day Shipping
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 Aero Precision EPC-9 Threaded Assembled Upper Receiver w/ LRBHO made-in-usa-flag 4 models Aero Precision EPC-9 Threaded Assembled Upper Receiver w/ LRBHO (8) As Low As (Save Up to 11%) $164.99
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 26%) $519.99
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 25%) $519.99
Image of Aero Precision M4E1 Threaded 14.5in 5.56 Mid-Length w/ ATLAS S-ONE Handguard Complete Upper Receiver with Flash Hider made-in-usa-flag 2 models Aero Precision M4E1 Threaded 14.5in 5.56 Mid-Length w/ ATLAS S-ONE Handguard Complete Upper Receiver with Flash Hider (26) As Low As (Save 10%) $574.99
Image of Tippmann Arms M4-22 ELITE .22 Long Rifle, 16in Conversion Upper Receiver Kit 2 models Tippmann Arms M4-22 ELITE .22 Long Rifle, 16in Conversion Upper Receiver Kit (6) List: $379.95 (Save $30.00) $349.95 Final Sale
Image of Aero Precision M5E1 18in .308 Winchester Complete Upper Receiver with Flash Hider made-in-usa-flag 7 models Aero Precision M5E1 18in .308 Winchester Complete Upper Receiver with Flash Hider (16) As Low As (Save Up to 22%) $569.99
Image of Aero Precision .308 UPPER STRP FDE made-in-usa-flag 3 models Aero Precision .308 UPPER STRP FDE (9) As Low As (Save Up to 29%) $109.99 Clearance
Image of Rock River Arms Carbine SS .350 Legend Completed Upper Rock River Arms Carbine SS .350 Legend Completed Upper (5) List: $710.00 (Save 15%) $599.99
Image of Daniel Defense DDM4 V7 S 11.5in 5.56 Complete Upper Receiver w/ Flash Hider 3 models Daniel Defense DDM4 V7 S 11.5in 5.56 Complete Upper Receiver w/ Flash Hider (20) List: $1,300.00 (Save Up to $92.00) $1,208.00 Final Sale
Image of Aero Precision M5 20in .308 Winchester RM15 Complete Upper Receiver made-in-usa-flag 4 models Aero Precision M5 20in .308 Winchester RM15 Complete Upper Receiver (12) As Low As (Save 10%) $629.99
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 18%) $469.99
Image of Geissele Near Clone 11.5in 5.56mm Upper Receiver Assembly Geissele Near Clone 11.5in 5.56mm Upper Receiver Assembly (5) List: $1,525.00 (Save $135.01) $1,389.99
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
Image of Aero Precision M4E1 14.5in 5.56 NATO Threaded Complete Upper Receiver made-in-usa-flag 3 models Aero Precision M4E1 14.5in 5.56 NATO Threaded Complete Upper Receiver (6) As Low As (Save Up to 15%) $450.49
Image of Spikes Tactical 5.56 Cold Hammer Forged 8.1in Upper Receiver w/7in SAR3 made-in-usa-flag Spikes Tactical 5.56 Cold Hammer Forged 8.1in Upper Receiver w/7in SAR3 (7) List: $790.00 (Save 10%) $711.00
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 (9) As Low As (Save Up to 19%) $559.99
Image of TacFire 9mm Complete Upper Assembly made-in-usa-flag 4 models TacFire 9mm Complete Upper Assembly (6) As Low As (Save Up to 10%) $269.49
Image of Aero Precision M4E1 AR-15 Threaded Stripped Upper Receiver made-in-usa-flag 4 models Aero Precision M4E1 AR-15 Threaded Stripped Upper Receiver (26) As Low As (Save Up to 10%) $134.99
Image of Stag Arms AR-15 A3 Flattop Upper Receiver made-in-usa-flag 3 models Stag Arms AR-15 A3 Flattop Upper Receiver (12) As Low As (Save Up to 10%) $89.99
Image of TacFire 5.56 NATO Complete Upper Assembly made-in-usa-flag 4 models TacFire 5.56 NATO Complete Upper Assembly (5) As Low As (Save Up to 10%) $269.49
Image of Aero Precision M4E1 16in Threaded 5.56x45mm Complete Upper Receiver with Flash Hider made-in-usa-flag 7 models Aero Precision M4E1 16in Threaded 5.56x45mm Complete Upper Receiver with Flash Hider (15) As Low As (Save Up to 27%) $479.99 Final Sale
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 Wilson Combat AR-15 Billet Stripped Upper Receiver Wilson Combat AR-15 Billet Stripped Upper Receiver (9) List: $266.00 (Save 17%) $221.95
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 (8) As Low As (Save 10%) $609.99
Image of Aero Precision M4E1 AR-15 18in 5.56 Rifle Barrel Complete Upper Receiver with Flash Hider made-in-usa-flag 3 models Aero Precision M4E1 AR-15 18in 5.56 Rifle Barrel Complete Upper Receiver with Flash Hider (22) As Low As (Save Up to 18%) $469.99
Image of Aero Precision M4E1 16in 5.56mm Complete Upper Receiver with Flash Hider made-in-usa-flag 16 models Aero Precision M4E1 16in 5.56mm Complete Upper Receiver with Flash Hider (7) As Low As (Save Up to 19%) $437.74
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 18%) $441.99
Image of Spikes Tactical Billet Upper - Gen II - Mil-Spec Barrel Nut made-in-usa-flag Spikes Tactical Billet Upper - Gen II - Mil-Spec Barrel Nut (14) List: $270.00 (Save 10%) $243.00
Image of Aero Precision M5E1 22in 6.5mm Creedmoor Complete Upper Receiver with Flash Hider made-in-usa-flag 4 models Aero Precision M5E1 22in 6.5mm Creedmoor Complete Upper Receiver with Flash Hider (7) As Low As (Save 10%) $689.99
Image of Wilson Combat Upper Receiver 4 models Wilson Combat Upper Receiver (41) As Low As (Save Up to 24%) $87.95
Image of Icon Defense Forged Stripped Upper Receiver made-in-usa-flag Icon Defense Forged Stripped Upper Receiver (6) List: $129.99 (Save $6.00) $123.99
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
Image of Aero Precision M5 16in .308 CMV Complete Upper Receiver with Flash Hider w/ ATLAS S-ONE Handguard made-in-usa-flag 4 models Aero Precision M5 16in .308 CMV Complete Upper Receiver with Flash Hider w/ ATLAS S-ONE Handguard (8) As Low As (Save Up to 22%) $505.99
Image of Fortis Manufacturing Fortis Billet Upper Receiver Fortis Manufacturing Fortis Billet Upper Receiver (11) List: $199.95 (Save $10.00) $189.95 Free 2 Day Shipping
Image of Aero Precision M4E1 5.56 NATO No Forward Assist Threaded Assembled Upper Receiver made-in-usa-flag 4 models Aero Precision M4E1 5.56 NATO No Forward Assist Threaded Assembled Upper Receiver (5) As Low As (Save Up to 11%) $149.99
Image of Luth-AR AR-15 A1 Upper Receiver Assembled Luth-AR AR-15 A1 Upper Receiver Assembled (8) List: $199.95 (Save $12.00) $187.95
Image of ODIN Works Billet Upper Receiver 2 models ODIN Works Billet Upper Receiver (19) As Low As (Save Up to $15.45) $155.55
Image of Grid Defense 5.56 Upper Receiver 12 models Grid Defense 5.56 Upper Receiver (7) As Low As (Save Up to 29%) $283.99 On Sale
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 20%) $454.74
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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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