Buy AR-10 Upper Receivers | Premium .308 Upper Assemblies

Buy AR-10 Upper Receivers | Premium .308 Upper Assemblies

Build, upgrade, or replace your large-frame AR with AR-10 upper receivers from Moriarti Armaments. Our selection includes stripped and assembled AR-10 upper receivers designed for compatibility with most DPMS-style AR-10 platforms. Choose from forged upper receivers and specialty designs engineered to provide a reliable foundation for custom rifle builds, repairs, and performance upgrades.

What is the difference between an AR-10 and AR-15 upper receiver?

An AR-10 upper receiver is larger than an AR-15 upper receiver because it is designed around large-frame cartridges such as .308 Winchester, 6.5 Creedmoor, .243 Winchester, .277 SIG FURY/6.8x51, and 8.6 Blackout. AR-10 and AR-15 uppers are not interchangeable. Large-frame receiver dimensions and patterns can also vary between manufacturers, so always verify the receiver pattern, lower compatibility, handguard interface, barrel, and BCG requirements when selecting an AR-10 upper receiver.