20" 5.56 NATO & .223 Wylde AR-15 Rifle-Length Uppers

20" 5.56 NATO & .223 Wylde AR-15 Rifle-Length Uppers

Shop 20" 5.56 NATO and .223 Wylde AR-15 uppers from Moriarti in full-length rifle configurations. The 20-inch barrel is a classic AR-15 length, offering additional velocity potential and a longer configuration suited to target, precision and general-purpose shooting. Browse 20-inch AR-15 upper assemblies with different barrel profiles, twist rates, M-LOK handguards and finishes, and compare each model for its exact barrel, gas system and included components.

Why choose a 20-inch 5.56 or .223 Wylde AR-15 upper?

A 20-inch AR-15 upper provides more barrel length for 5.56 NATO and .223 Remington ammunition than shorter carbine configurations, generally allowing greater velocity depending on the load. It is a traditional AR-15 rifle length and is commonly selected for full-size, target and precision-oriented configurations.