AR-15 Upper Receivers and Parts
Quality AR-15 Upper Receivers and Parts
When it comes to AR15 Upper Receivers, we have what you need for your next build.
Looking for complete upper receiver assemblies with barrel and handguard? Check out our complete upper assemblies category.
Sort
Filter
List
Grid
-
NEW
Luth-AR Forged A1 Assembled AR-15 Upper Receiver
Luth-AR A1 Upper: Retro AR Perfection - Complete & Ready to Rock! Step back in time with Luth-AR's A1 Assembled Upper Receiver. This meticulously crafted upper brings classic AR-15 styling... -
NEW
Luth-AR Forged A2 Assembled AR-15 Upper Receiver
Luth-AR A2 Upper: Classic AR-15 Style - Fully Assembled & Ready! Embrace the iconic A2 design with Luth-AR's Forged A2 Assembled AR-15 Upper Receiver. This meticulously crafted upper brings timeless... -
NEW
UTG PRO AR-15 Billet Receiver Set
UTG PRO AR-15 Billet Receiver Set: Premium USA-Made Foundation for Custom Builds The UTG PRO AR-15 Billet Receiver Set offers a high-quality, American-made foundation for custom AR-15 builds. Precision machined... -
NEW
UTG PRO AR-15 Ambi Billet Receiver Set
UTG PRO AR-15 Ambi Billet Receiver Set: Premium USA-Made Foundation for Ambidextrous Builds The UTG PRO AR-15 Ambi Billet Receiver Set offers a high-quality, American-made foundation for custom AR-15 builds... -
NEW
Foxtrot Mike 16″ Side Charging AR-15 Upper Reciever – .223 Wylde – Black
Foxtrot Mike 16" Side Charging AR-15 Upper Receiver: Versatile AR-15 Performance This Foxtrot Mike upper receiver offers a unique side-charging design and .223 Wylde chambering for enhanced versatility and ergonomics.... -
AT3™
AT3™ AR 15 Ejection Port Cover C-Clip – Pack of 2
AT3™ AR-15 Ejection Port Cover C-Clips - Pack of 2 All AT3 Tactical lower receiver parts meet or exceed Mil Spec. These parts are guaranteed to fit and function in... -
AT3™RECOMMENDED
AT3™ Slick Side Upper | Billet Upper Receiver for AR-15
Tough, Sleek, and ready for the AT3 SPEAR M-LOK Handguard Machined from billet aluminum, this unique slick-side upper receiver has no forward assist, includes a dust cover, and matches perfectly...9 Options -
NEW
LBE Unlimited A2 Stripped AR-15 Upper Receiver
LBE Unlimited A2 Stripped Upper Receiver - Forged 7075 Aluminum Build This LBE Unlimited A2 Stripped Upper Receiver provides a rock-solid foundation for your AR-15 build. Crafted from forged 7075... -
AT3™
AT3 Tactical Firing Pin Retainer for AR15 BCG
Replacement Cotter Pin for AR-15 Firing Pin From the first time you've stripped down your AR15, you've probably learned to hate the firing pin retainer. It can be hard to... -
Timber Creek Outdoors AR-15 Forward Assist Assembly
Add a Custom Look to Your Upper with the TCO Forward Assist If you're all about the details, you'll appreciate this drop-in replacement for your AR-15 or AR-10 forward assist....8 Options -
AT3™
AT3™ AR-15 Barrel Nut & Delta Ring Assembly
Mil-Spec Delta Ring Assembly for AR15/M4/M16 Fully assembled, and consists of 4 parts: Mil-Spec Barrel Nut Delta Ring, Snap Ring, and Weld Spring. If you have damaged your delta ring... -
Strike Industries Ultimate AR-15 Dust Cover
Strike Industries Ultimate AR-15 Dust Cover: Next-Gen Protection Elevate your AR-15 with the Strike Industries Ultimate Dust Cover (UDC), a game-changing upgrade that redefines convenience and functionality. Designed for effortless...8 Options -
SOTA Arms Assembled Mil-Spec AR-15 Upper Receiver
High Value Forged Upper with Forward Assist and Dust Cover Need your build to be on-time, under budget, with an upper you can trust, forward assist and all? This assembled... -
Magpul AR-15 Enhanced Ejection Port Cover
Easy To Install & More Rugged Polymer Ejection Port Cover from Magpul The Enhanced Ejection Port Cover is a more rugged drop-in upgrade that can be installed easily on any...3 Options -
AT3™
AT3™ Replacement Barrel Nut for SPEAR M-LOK and Pro Quad Rail Handguards
Replacement Barrel Nut for SPEAR and Pro Quad Rails This lightweight aluminum barrel nut works with all of the AT3 Tactical handguards. If you've damaged or misplaced your barrel nut,... -
Timber Creek Outdoors Billet Dust Cover – AR BCD
Stylish Billet Replacement for Mil-Spec Dust Covers in Multiple Colors Another great embellishment from Timber Creek Outdoors! This dust cover adds unique character to your AR15 upper without sacrificing function. ...8 Options -
NEW
Armaspec AR Firing Pin – Stainless Steel – Multiple Platforms
Ignite Your AR's Potential Whether you're running an AR-15, AR-10, or AR-9 platform, ensure reliable ignition with the ultra-durable Armaspec Firing Pin. This mission-critical component is expertly machined from premium...3 Options -
AT3™On Sale
AT3™ AR15 Forward Assist
AT3 AR-15 Forward Assist Assembly If you're looking to complete or repair an upper, or add a cool Cerakote accent, check out the AT3 Forward Assist Assembly. These forward assists...9 Options -
NEW
Aero Precision M4E1-T AR15 Complete Upper 300 BLK 8″ – No BCG/Charging Handle
Aero Precision M4E1-T 8" 300 Blackout Upper Build your ultimate 300 BLK AR pistol with Aero Precision's enhanced M4E1-T complete upper. This assembly centers around an 8" CMV barrel chambered...2 Options -
AT3™
AT3 Tactical Gas Rings for AR15 Bolts – Set of 3
Set of 3 Gas Rings for Repairing an AR15 Bolt If your AR15 isn't cycling reliably, it may be due to the gas rings on your bolt wearing out. The... -
NEW
Aero Precision M4E1-T AR15 Complete Upper .223/5.56 NATO 14.5″ – No BCG/Charging Handle
Aero Precision M4E1-T Enhanced AR-15 Upper Upgrade your AR build with Aero Precision's M4E1-T complete upper receiver. This top-quality assembly features a 14.5" 5.56 NATO barrel with a mid-length gas...2 Options -
NEW
Aero Precision M4E1-T AR15 Complete Upper .223/5.56 NATO 10.5″ – No BCG/Charging Handle
Aero Precision M4E1-T 10.5" AR-15 Complete Upper Upgrade your AR build with Aero Precision's enhanced M4E1-T complete upper featuring a 10.5" barrel and free-float ATLAS handguard. This top-quality assembly is...2 Options -
AT3™On Sale
AT3™ AR15 Ejection Port / Dust Cover Assembly
AT3 AR-15 Dust Cover Assembly Also called an AR-15 ejection port cover, the dust cover on your AR-15 helps seal your AR-15's bolt carrier against the elements while not in...9 Options -
AT3™
AT3™ Handguard End Cap – Round
AT3™ Handguard End Cap - Round The Mil-Spec AR-15 Handguard End Cap is a high-quality part for your AR-15. The end cap features a .750" diameter barrel opening, making it...
Other AR-15 Upper Receiver Components:
AR 15 Charging Handles
AR 15 Gas Blocks & Tubes
AR 15 Handguards & Quad Rails
AR-15 Barrels
AR-15 Bolt Carrier Groups
AR-15 Front Grips
AR-15 Upper Receivers and Parts
Muzzle DevicesAR-15 Handguard Accessories
We respect your privacy.