Davidson Defense Ronin Competition 7.5-inch 1:16 10MM AR-15 M-Lok Handguard Pistol Upper Build Kit

Ronin Competition 7.5-inch 10mm AR-15 Upper Build Kit

The Ronin Competition is built around a 7.5-inch 10mm Auto barrel with an M4 contour, built from 4150 chrome moly vanadium steel and finished in Parkerized, paired with a Vertex enhanced pistol-caliber billet upper receiver. It pairs an ACE-20 Series 7-inch free-float M-LOK handguard with a steel pass-through flash can at the muzzle, operating on a blowback system. BCG and charging handle are not included, leaving the buyer to supply those components separately.

Key Features

• 7.5-inch 10mm Auto barrel, 1:16 twist, M4 contour, Parkerized finish
• Blowback operating system
• Vertex enhanced pistol-caliber AR-15 billet upper receiver
• ACE-20 Series 7-inch free-float M-LOK handguard
• Steel pass-through flash can, 10mm/.40 S&W compatible
• BCG and charging handle are not included.

Barrel and Operating System

The barrel runs 7.5 inches long, chambered in 10mm Auto and built from 4150 chrome moly vanadium steel with a Parkerized finish and M4 contour. It carries a 1:16 twist rate and a 9/16x24 muzzle thread. This upper cycles on a blowback system, relying on bolt mass and recoil spring pressure rather than a gas system to cycle the action.

Upper Receiver and Handguard

The upper receiver is a Vertex enhanced pistol-caliber billet unit, purpose-built for the AR-15 pistol-caliber carbine platform. Over the barrel sits an ACE-20 Series 7-inch handguard, free-floated and finished in black, using an M-LOK attachment system along its length.

Muzzle Device

Capping the muzzle is a steel flash can, built with a pass-through bore sized for 10mm and .40 S&W. It threads onto the barrel's 9/16x24 pattern and is secured with the included 5/8-inch black crush washer.

Follow all manufacturer instructions and safe handling practices.

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

BCG and charging handle are not included.