“Sunset” .300 Blackout Carbine Upper Kit – Team Dream Build
Features
- Compact .300 Blackout upper kit based on the Sunset Team Dream Build configuration
- 8.5″ KAK Industry OE-SPEC barrel gives the upper a short, handy profile for close-range shooting
- 9″ AT3 Pro Quad Rail gives the build a chunky front end with plenty of rail space for accessories
- Ultradyne Athena linear compensator helps direct blast forward on an unsuppressed short-barrel setup
- JP Enterprises LMOS carrier, AT3 bolt, and adjustable gas block support a lightweight, tunable operating system
- Breek Arms Micro Warhammer charging handle keeps the rear of the upper compact and easy to run
- AT3 ALPHA Micro red dot gives the build a simple close-range sighting setup
- Inspired by the original Sunset employee build, which was Cerakoted in Copper, Blood Orange, and Polar Blue
The “Sunset” .300 Blackout Carbine Upper Kit is built around a compact 8.5″ .300 Blackout setup made to be comfortable, flashy, and fun at the range without immediately relying on a suppressor. The original employee build was part of a matching set with “Diesel” and was Cerakoted in Copper, Blood Orange, and Polar Blue, giving Sunset the loud custom look that made it one of AT3’s sticker-worthy builds. Under the personality, the lightweight carrier setup, adjustable gas block, and linear compensator give this upper a more tuned feel than a basic short .300 Blackout build.
Note: This product page is for the upper kit only. The matching Sunset .300 Blackout Carbine lower kit is sold separately and can be paired with this upper, but assembling these components in the intended Dream Build configuration creates a short-barreled rifle. NFA rules and processes apply, and it is the purchaser’s responsibility to ensure any final configuration complies with all applicable federal, state, and local laws before assembly.
Kit Note: This product is sold as a parts kit, and final assembly is up to the purchaser. Parts and accessories are subject to change due to unforeseen shortages, compatibility updates, or compliance changes. Any substitutions will be of equal or greater value and will be noted in this product listing. Cerakote or custom finish work is not included – All parts for this build are standard black.
Specifications
- Build: Sunset .300 Blackout Carbine Upper Kit
- Platform: AR-15
- Caliber: .300 Blackout
- Barrel Length: 8.5″
- Gas System: Pistol-Length
- Handguard Length: 9″
- Handguard Type: Free Float Quad Rail
- Upper Receiver: Slick Side Billet AR-15 Upper Receiver
- Bolt Carrier: JP Enterprises LMOS AR-15 Carrier
- Bolt: AT3 AR-15 Replacement Bolt for .223/5.56
- Gas Block: Adjustable, .750″
- Muzzle Device: Ultradyne Athena Linear Compensator
- Muzzle Device Thread Pitch: 5/8×24
- Charging Handle: Breek Arms Micro Warhammer AR-15 Charging Handle
- Optic: AT3 ALPHA Micro 2 MOA Red Dot Sight with Cantilever Riser Mount
What’s Included
Upper Assembly Components:
- KAK Industry 8.5″ OE-SPEC Pistol Gas .300 Blackout AR-15 Barrel
- AT3 Slick Side Billet Upper Receiver for AR-15
- AT3 Pro Quad Rail Free Float AR-15 Handguard – 9″
- Ultradyne USA Athena Linear Compensator – 5/8×24 – .30 Caliber
- JP Enterprises LMOS AR-15 Bolt Carrier – QPQ
- AT3 Tactical Replacement AR-15 Bolt for .223/5.56
- CMMG AR-15 Bolt Rehab Parts Kit
- Breek Arms Micro Warhammer AR-15 Charging Handle
- Wojtek Adjustable Gas Block – .750″
- AR-15 Pistol-Length Gas Tube
- AT3 AR-15 Gas Tube Roll Pin
- AT3 ALPHA Micro 2 MOA Red Dot Sight – Shake Awake – Cantilever Riser Mount
