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AR-15 Upper Assembly

Showing 1–24 of 32 results



Showing 1–24 of 32 results

Upper Assembly for AR-15

An upper assembly for the AR platform is typically made up of an upper receiver, barrel, handguard, rail system, gas system, bolt carrier group, and flash devices. Differences among upper assemblies is based primarily on caliber, barrel length, handguard and railing. The more common upper assemblies are those chambered for .223/5.56 or .300 Blackout. Other calibers that can be used on the AR-15 platform are 6.5 Grendel and 6.8 Remington SPC. Bigger calibers can be used if built on an AR-10 lower receiver.

Choosing from a wide variety of manufacturers of upper assemblies, you can find exactly what you are looking for without getting into building it yourself. For the adventurous DIY’ers out there, the options are close to limitless when it comes to combining upper parts.