Details
Ronin Competition 300 Blackout AR-15 Pistol Complete Upper Build
The Ronin Competition Complete Upper Build from Delta Team Tactical is a 300 Blackout AR-15 pistol upper built around a Black Diamond Series slick side billet upper receiver and a 7.5 inch steel barrel, paired with an ACE-20 Series 7 inch free float M-LOK handguard. This build includes a complete bolt carrier group and a Mil-Spec charging handle, along with a 308 flash and sound forwarder, rounding out the upper component set.
Key Features
- Ronin Competition Black Diamond Series slick side billet upper receiver
- Billet aluminum construction, made in the USA
- 7.5 inch 300 Blackout barrel, steel, phosphate finish
- HBAR profile, 1-8 twist rate
- ACE-20 Series 7 inch free float M-LOK handguard
- 308 flash and sound forwarder, nitride finish
- Complete AR-15 bolt carrier group, 223, 556, 300, 350 compatible, made in the USA
- Mil-Spec M4 charging handle
- Ejection port door with rod and spring
Perfect For
- Builders sourcing a complete 300 Blackout AR-15 pistol upper to pair with their own lower
- Shooters wanting a billet upper build with a flash and sound forwarder included
- Builders who want the upper, BCG, and charging handle covered in one package
Upper Assembly and Barrel
The Ronin Competition upper assembly pairs a Black Diamond Series slick side billet upper receiver with a 7.5 inch steel barrel and an ACE-20 Series 7 inch free float M-LOK handguard. The receiver is machined from billet aluminum and made in the USA, giving the upper a solid one piece feel with a smooth, uninterrupted side profile. The barrel is phosphate finished for corrosion resistance and built in an HBAR profile, a heavier contour that adds some weight forward for a steadier feel during shooting. It is cut with a 1-8 twist rate suited to a range of 300 Blackout bullet weights. The upper uses a pistol length gas system paired with a premium low profile adjustable gas block, giving the shooter some control over how the system cycles. Together these components make up the front end of this 300 Blackout AR-15 pistol build.
Bolt Carrier Group and Charging Handle
This build includes a complete bolt carrier group made in the USA and compatible with 223, 556, 300, and 350 calibers. A Mil-Spec M4 charging handle and an ejection port door with rod and spring are also included, rounding out the moving components on the upper side of this build.
308 Flash and Sound Forwarder
This build includes a 308 flash and sound forwarder finished in nitride for durability. This type of muzzle device is designed to help manage flash signature and sound direction at the muzzle end of the barrel, and it is included as part of this 300 Blackout AR-15 pistol build.
Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws.
