Davidson Defense Ronin Competition 16.5" AR-15 5.56 NATO Build Kit, Mid-Gas, Plan B Scorch Flash Hider

Ronin Competition 16.5-inch Mid-Gas 5.56 NATO AR-15 Full Build Kit with Plan B Scorch Flash Hider

This Ronin Competition full build kit delivers a mid-length gas system AR-15 designed for reliable cycling and controlled recoil. The 16.5-inch barrel uses a 1:7 twist rate optimized for 5.56 NATO ammunition, while the freefloat M-Lok handguard isolates the barrel from external pressure for consistent accuracy. The billet upper receiver and quality bolt carrier group provide the foundation for a dependable rifle platform.

Key Features

• 16.5-inch medium profile barrel with QPQ nitride finish and 1:7 twist rate
• Black Diamond Series billet upper receiver, USA made from 6061-T6 aluminum
• 15-inch freefloat M-Lok handguard for isolated barrel performance
• Mid-length gas system with micro low-profile gas block
• Plan B Scorch 3-prong flash hider with modular suppressor mounting capability
• Complete bolt carrier group in 9310 alloy steel with nitride finish
• Mil-spec M4 charging handle
• Lower receiver not included

Perfect For

• Builders seeking a mid-range competitive or range rifle platform
• Shooters who want a shorter barrel with reliable mid-gas cycling
• Marksmen prioritizing freefloat accuracy without a heavy profile
• Users planning to integrate suppressor-ready muzzle devices

Plan B Scorch Modular Mounting

The included Plan B Scorch 3-prong flash hider supports the modular suppressor mounting ecosystem. This design allows you to integrate compatible suppressors without replacing the muzzle device, creating a standardized interface across your rifle platform. The Scorch maintains the 1/2x28 thread pitch for seamless compatibility with standard 5.56 NATO suppressors and accessories.

Mid-Length Gas System Performance

This configuration uses a mid-length gas tube paired with a micro low-profile gas block. The mid-length system strikes a balance between the shorter carbine-length and longer rifle-length options, providing reliable cycling with moderate recoil impulse. The low-profile design minimizes interference with optic mounting and handguard clearance while maintaining functional gas port alignment.

Freefloat Handguard Accuracy Design

The 15-inch M-Lok handguard isolates the barrel from the upper receiver, eliminating contact that can shift point of impact. This design principle improves shot-to-shot consistency by removing external pressure variables. The M-Lok slot pattern provides standardized accessory mounting for lights, grips, and other rail systems without adding unnecessary weight.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. Lower receiver not included. May Dropship from Davidson Defense.