
AR Uppers & Kits
- In StockSharps Bros. SBUR03, Billet Upper Receiver, Fits AR15, Black Finish, Includes Forward Assist and Dust Cover SBUR03Made from billet 7075-T6 aluminumMil-Spec Type III hard coat anodize'SHARPS BROS.' discretely engraved on both sides Sharps often gets asked which upper matches the best with Sharps ...22% off$151.99$194.99
- In StockCHIAPPA FIREARMS M4-22 Gen II Pro 22LR 16in Upper With 2x28rd Magazines (500.095)Polymer w/ Steel Barrel MaterialIncludes 2-28 Round Magazines Just like the MFour-22 rifle, the Chiappa M4-22 Upper Receiver Kit takes advantage of AR platform dimensions and geometry. These ...13% off$269.99$309.99
- In StockDANIEL DEFENSE MK18 AR-15 Complete Upper Receiver Group (23-004-08013-006)UPPER RECEIVER: Mil-Spec with Indexing Marks and M4 Feed Ramps. CNC Machined of 7075-T6 Aluminum, Type III Hard Coat AnodizedBARREL: Chrome Moly Vanadium Steel, Cold Hammer Forged, 1:7 Twist, ...3% off$1,366.00$1,412.00★★★★★1 review(s)
- In StockLBE Unlimited Upper, Black Finish, Forward Assist/Ejection Port Cover Assembly Installed, Fits AR15 ARUPPERUpper Receiver with Forward Assist and Ejection Port Cover Assembly Installed7075 Forged AluminumAnodized BlackT-Marked on Top LBE Unlimited is a leading producer of US Made gun parts and ...$107.66
- In StockLuth-AR Upper, Black, 1913 Rail for Mounting Optics and Accessories, Forged, Flat Top, Comes with Charging Handle, Forward Assist, and Dust Cover FTT-EA1.223/5.56 Upper Receiver Assembled7075-T6 ForgingHardcoat Anodized Black Start your new build with a Luth-AR .223/5.56 A3 Flattop Upper Receiver comes fully assembled with an M4-type feed ramp, ...$104.70
- In StockMidwest Industries Upper, 223 Wylde, 16" Lightweight Barrel, Black, 15" MLOK Handguard, Fits AR15, No BCG or Charging Handle MI-N16CRM15-U7075 T6 AluminumM-LOK HandguardM4 Feedramps This Forged 7075 T6 Aluminum Upper features an M-LOK compatible handguard, M4 feedramps, Melonite finished barrel and Hard Coat Anodizing.$584.95
- In StockLuth-AR A3 Upper Receiver Parts Kit URPK-A3Fits AR-15Upper Parts KitEjection Port CoverForward Assist The A3 Upper Receiver Parts Kit for AR-15 includes the ejection port cover, ejection port rod, ejection port C-clip, ejection port ...$25.53
- In StockPATRIOT ORDNANCE FACTORY Minuteman Upper Receiver Assembly, 5.56, 16.5" Barrel, Mid-Length Lo Pro DI Gas Block, 14.5" Rail BLACK (01652)If you're looking to build something on an AR15 platform and want the absolute best semiautomatic tactical rifle upper, consider building around this POF-USA Minuteman upper. The Patriot Ordnance ...$859.03
- In StockPATRIOT ORDNANCE FACTORY Minuteman Upper Receiver Assembly, 5.56, 10.5" Barrel, Carbine Length Lo Pro DI Gas Block, 9" Rail BLACK (01654)If you're looking to build something on an AR15 platform and want the absolute best semiautomatic tactical rifle upper, consider building around this POF-USA Minuteman upper. The Patriot Ordnance ...$859.03
- In StockPATRIOT ORDNANCE FACTORY Minuteman Upper Receiver Assembly, 5.56, 16.5" Barrel, Mid-Length Lo Pro DI Gas Block, 14.5" Rail PATRIOT BROWN (01815)If you're looking to build something on an AR15 platform and want the absolute best semiautomatic tactical rifle upper, consider building around this POF-USA Minuteman upper. The Patriot Ordnance ...$927.12
- In StockPATRIOT ORDNANCE FACTORY Minuteman Upper Receiver Assembly, 5.56, 10.5" Barrel, Carbine Length Lo Pro DI Gas Block, 9" Rail PATRIOT BROWN (01817)If you're looking to build something on an AR15 platform and want the absolute best semiautomatic tactical rifle upper, consider building around this POF-USA Minuteman upper. The Patriot Ordnance ...$927.12
- In StockCMMG Upper Group, Resolute, Mk4, 350 Legend, 16.1", Armor Black (35B5FBC-AB)Precise manufacturinglong term reliabilityDurable construction16.1" Barrel350 LegendComplete upper assemblyCerakoted Armor Black CMMG's RESOLUTE lineup is engineered with purpose for those ...$734.93
- In StockCMMG Upper Group, Banshee, 9mm, 5", Armor Black (99B17FD-AB)Precise manufacturinglong term reliabilityDurable construction8" Barrel5.7x28mmComplete upper assemblyCerakoted Armor Black CMMG delivers its lightest and most compact firearms within the ...$755.12
- In StockSilencerCo SCO15, Stripped Upper Receiver, .223 Remington/556NATO, Black AC5065Stripped upper receiver7075-t6 aluminumAnodized black SilencerCo's AR-15 upper receiver is made from billet 7075-T6 aluminum, it is precision machined for compatibility with all of your preferred ...$197.04
- In StockSons of Liberty Gun Works Patrol Complete Upper, 223 Remington/556NATO, 16" Combat Barrel, QPQ Finish, Black, Magpul SL Handguard, Midwest Combat Rear Sight, A2 Front Sight PATROLSLUPPER-16-5565.56NATO/223 RemingtonComplete Upper Receiver16" Combat BarrelMidlength GasMagpul SL HandguardNOX Muzzle DeviceA2 Front Sight Sons of Liberty Gun Works believes in Quality Mil-Spec or better ...$559.27
- In StockGEMTECH Integra 15-22 .22LR Suppressed Complete Upper (12568)Complete Integrally Suppressed Upper AssemblyCharging HandleBolt Carrier AssemblyFits M&P 15-22 Lower Receiver6061 Aluminum Tube MaterialMatte Black High-Temp Cerakote Tube Finish4140 Steel ...6% off$582.99$620.00
- In StockCMMG Dissent Mk4 300BLK 6.5in Armor Black Upper Group (30B0E67-AB).300 AAC Blackout caliberCompact Action-Direct impingement operating systemIt include a 1913 Picatinny rail end plate to use in place of the lower receiver buffer tubeAdjustable Gas Block - With ...$1,099.99
- In StockCMMG Dissent Mk4 300BLK 10.5in Armor Black Upper Group (30BC239-AB).300 AAC Blackout caliberCompact Action-Direct impingement operating systemIt include a 1913 Picatinny rail end plate to use in place of the lower receiver buffer tubeAdjustable Gas Block - With ...20% off$1,098.32$1,374.99
- In StockCMMG Resolute Mk4 5.56x45mm Nato 16.1in No BCG or Charging Handle Armor Black Upper Group (55BB40B-AB)5.56x45mm NATO caliber16.1" barrelDirect impingement operating systemCmmg EML15 M-lok hand guard4140CM, SBN barrel materialMid gas port locationNot Included BCGNot Included charging ...$427.61
- In StockCMMG Resolute Mk4 5.56x45mm Nato 16.1in No BCG or Charging Handle Midnight Bronze Upper Group (55BB40B-MB)5.56x45mm NATO caliber16.1" barrelDirect impingement operating systemCmmg EML15 M-lok hand guard4140CM, SBN barrel materialMid gas port locationNot Included BCGNot Included charging ...$427.61
If we compare parts of an AR with body parts, the upper receivers are undoubtedly the heart. As you might know, this assembly of components is indispensable for making the shooting process possible. Not that lower receivers play a minor role in that shooting play, but AR upper receivers house the components responsible for crucial steps of the firing process. Unlike lower receivers, they are not considered legal firearms and thus won’t cost you any extra paperwork. At the same time, a different upper AR receiver can turn your firearm from a close quarters carbine to a long-range precision rifle. Upper receivers are the most customizable part of ARs, so the choice is ample.
AR Uppers can be classified according to different characteristics, but the one we consider most relevant for customization enthusiasts is the degree of completeness. Some people prefer their upper complete, while others opt for stripped variants. The difference is on the surface: if an upper receiver is stripped, it includes only the main piece of metal that houses other components. A complete upper receiver will have the ejection port and the forward assist button installed. In case you don’t want to trouble yourself with gathering all the components, you can get an upper receiver assembly. It’s a complete, ready-to-be-fired system that includes a charging handle, barrel, handguards, and bolt carrier group. The only thing you’ll need to shoot is to attach it to a lower receiver.
GritrSports.com is a gun store dedicated to giving our customers the widest choice possible. Here, we have dozens of upper receivers for sale. You can find them in whatever configuration you might need, be it stripped, complete, or a whole assembly. Choose from a wide selection of products manufactured by such brands as Aero Precision, Anderson, ATI, CMMG, Daniel Defense, POF, Spikes Tactical, and many others.
Complete your AR build or make a long-awaited upgrade when you shop AR uppers at GritrSports.com.