Davidson Defense Ronin Competition 16-inch Carbine-Gas 1:8 .338 ARC AR-15 Freefloat M-Lok Handguard Rifle Upper Build Kit

Ronin Competition 16 Inch Carbine Gas AR-15 Upper Build Kit .338 ARC Billet Freefloat MLOK

The Ronin Competition AR-15 Upper Build Kit is an upper assembly package built around a 16 inch 4150 CMV Steel barrel with a Parkerized finish, HBAR profile, and a 1:8 twist rate for .338 ARC. The upper receiver is a Black Diamond Series slick side billet design machined from 6061-T6 aluminum with a Type III hard coat anodized finish, made in the USA, paired with the Avalon 15 inch MLOK handguard featuring slant port cutouts and made from 6061-T6 aluminum in black. This kit covers the upper receiver, barrel, and handguard as the core front end components of an AR-15 rifle build. BCG and charging handle are not included.

Key Features

• 16 inch 4150 CMV Steel barrel, Parkerized finish, HBAR profile
• 1:8 twist rate, 5/8x24 thread pitch
• Carbine length gas system
• Micro low-profile gas block, 0.750, for 0.750 OD barrel steel
• Black Diamond Series slick side billet upper receiver, 6061-T6 aluminum
• Type III hard coat anodized finish, made in the USA
• Avalon 15 inch MLOK handguard, slant port cutouts, 6061-T6 aluminum, black
• GI birdcage flash hider, 5/8x24 TPI
• BCG and charging handle not included

Perfect For

• Builders who already have a bolt carrier group and charging handle on hand
• Shooters wanting a billet upper platform with a freefloat MLOK handguard
• Builders looking to complete the upper side of an AR-15 rifle without duplicating parts they already own

Barrel and Gas System

This kit uses a 16 inch barrel made from 4150 CMV Steel with a Parkerized finish and an HBAR profile. The 1:8 twist rate is suited to a wide range of .338 ARC bullet weights, and the 5/8x24 thread pitch matches the included GI birdcage flash hider. A carbine length gas system runs to a micro low-profile gas block sized for a 0.750 outer diameter barrel. The barrel and gas components make up the front end of this upper build kit.

Upper Receiver and Handguard

The upper receiver is a Black Diamond Series slick side billet design machined from 6061-T6 aluminum, finished in Type III hard coat anodize and made in the USA. The Avalon 15 inch MLOK handguard, featuring slant port cutouts and made from 6061-T6 aluminum in black, surrounds the barrel without contacting it, completing the exterior forend included in this kit.

Follow safe handling and manufacturer instructions.

Ensure compliance with all applicable federal, state, and local laws.

BCG and charging handle are not included.

Component specifications are subject to the details provided in this listing.