Davidson Defense Ronin Competition 6-inch 1:10 9MM AR-9 Freefloat M-Lok Handguard Pistol Full Build Kit, SBR Ready

Davidson Defense Ronin Competition AR-9 Pistol Full Build Kit - 6-inch, 9mm, M-Lok Freefloat Handguard, Linear Compensator, SBR Ready

The Davidson Defense Ronin Competition is a 9mm AR-9 pistol full build kit built around a 6061-T6 billet aluminum upper receiver with a Type 3 Class 2 hardcoat anodized finish. The kit includes a 6-inch medium profile barrel in 4150 chrome moly vanadium steel with a nitride finish, a 1:10 twist rate, and a 1/2x28 thread pitch, a 7-inch freefloat M-Lok handguard in black aluminum with a partial Picatinny top rail section, a black knurled straight-fluted linear compensator at 1/2x28, a 9mm nitride-finished 8620 alloy steel bolt carrier group compatible with Glock and Colt pattern magazines with external extractor, a Mil-Spec M4 charging handle, a Mil-Spec heavy-duty 6-position aluminum buffer tube, a 5.5 oz 9mm carbine buffer, a recoil spring, a Mil-Spec receiver end plate, and a carbine castle nut. This kit is SBR Ready and ships without a brace. Lower receiver not included.

Key Features

• 6061-T6 billet aluminum upper receiver, Type 3 Class 2 hardcoat anodized finish
• 6-inch medium profile barrel, 4150 chrome moly vanadium, nitride finish
• 9mm
• 1:10 twist rate
• 1/2x28 thread pitch
• 7-inch freefloat M-Lok handguard, black aluminum, partial Picatinny top rail section
• Black knurled straight-fluted linear compensator, 1/2x28
• 9mm 8620 alloy steel bolt carrier group, nitride finish, Glock and Colt magazine compatible, external extractor
• Mil-Spec M4 charging handle
• Mil-Spec heavy-duty 6-position aluminum buffer tube
• 5.5 oz 9mm carbine buffer
• Recoil spring
• Mil-Spec receiver end plate
• Carbine castle nut
• SBR Ready configuration
• Ships without a brace
• Lower receiver not included

Perfect For

• AR-9 pistol builders sourcing a complete 9mm full build kit in an SBR Ready configuration in a compact 6-inch setup
• Shooters pairing this kit with an existing AR-9 lower receiver compatible with Glock or Colt pattern magazines
• Builders selecting their own brace or stock for the final rear end setup

Barrel and Muzzle Device

The barrel is a 6-inch medium profile unit in 4150 chrome moly vanadium steel with a nitride finish, chambered in 9mm with a 1:10 twist rate and a 1/2x28 thread pitch. A black knurled straight-fluted linear compensator at 1/2x28 covers the muzzle end of this build kit.

Upper Receiver and Handguard

The 6061-T6 billet upper receiver features a Type 3 Class 2 hardcoat anodized finish, forming the structural core of the upper assembly. The 7-inch freefloat M-Lok handguard is black aluminum with a partial Picatinny top rail section, surrounding the barrel without contact and providing M-Lok mounting positions and a top rail segment for compatible accessories.

Bolt Carrier Group and Charging Handle

The included 9mm bolt carrier group is 8620 alloy steel with a nitride finish, compatible with Glock and Colt pattern magazines via an external extractor design. The BCG and Mil-Spec M4 charging handle work together to cycle the action and complete the upper side component set.

SBR Ready Configuration

This kit ships without a brace and is intended for buyers selecting their own final rear end setup. The buffer tube, recoil spring, end plate, and castle nut are included, but no brace or stock is provided. The final rear end configuration is dependent on the buyer's selected components.

Buffer System and Rear Hardware

The buffer system consists of a Mil-Spec heavy-duty 6-position aluminum buffer tube, a 5.5 oz 9mm carbine buffer, and a recoil spring. A Mil-Spec receiver end plate and carbine castle nut complete the rear hardware included with this full build kit.

Lower receiver not included. Ships without a brace. Do not attach a stock unless compliant with applicable laws. Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws.