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Hi Joel and welcome. Yes, both uppers are included. This 5.56 NATO semi-automatic rifle also comes with a separate complete upper assembly that's chambered in the increasingly popular .300 Blackout caliber. You'll be able to quickly switch from one caliber to the other with ease by simply pushing out a couple of pins and popping the other upper onto the lower. Both upper assemblies feature 16" chrome moly barrels with black nitride finishes and 12" M-LOK handguards which allow for the easy addition of any M-LOK compatible accessories. Cheers!

Yes, you get both Uppers. Full description on both below. Diamondback Firearms DB15 rifle uses a gas-impingement system and high quality CNC machined components. Features a 4140 chrome moly barrel, A3 Flattop upper receiver, carbine length gas system, 12" M-LOK rail, MOE grip, A2 Flash hider muzzle and a Magpul MOE Carbine stock. Made in the USA. This model comes with a compatible upper assembly chambered for 300 Blackout. Diamondback Firearms Item Number: DB1721K001 Semi-Automatic AR-15 Rifle 5.56x45mm NATO (also accepts .223 Remington) 30 Round Magazine 16" Chrome Moly Steel Barrel, Black Nitride Finish Carbine-Length Gas System Forged Aluminum Lower Receiver Forged Aluminum A3 Flattop Upper Receiver Optics Ready 12" M-Lok Rail Mil-Spec Bolt Carrier Group Magpul MOE Pistol Grip Magpul MOE Carbine Stock Standard Trigger A2 Flash Hider Weight: 6.7 lbs Black Finish .300 Blackout Complete Upper Assembly Specs: Caliber: .300 AAC Blackout 16" Chrome Moly Steel Barrel, Black Nitride Fini

Joel, yes sir, you get both uppers, 5.56 and .300 Blackout. Stay safe & have a great day!