Davidson Defense Warden Duty 16-inch .22 LR AR-15 Freefloat KeyMod Handguard Rifle Full Build Kit

Warden Duty 16-Inch .22 LR AR-15 Full Build Kit

The Warden Duty is a complete .22 LR AR-15 build kit designed for shooters who want an accurate, low-recoil rifle platform without the cost of centerfire ammunition. This kit pairs a dedicated stainless steel .22 LR bolt group with a 16-inch nitride 4140 steel barrel, freefloat KeyMod handguard, and all components needed to complete a functional rifle except the serialized lower receiver. The A2 flash hider, mil-spec buffer system, and SOPMOD collapsible stock round out a practical package for training, target shooting, or introducing new shooters to AR-15 ergonomics.

Key Features

• Dedicated stainless steel .22 LR bolt group for reliable rimfire cycling
• 16-inch pencil profile barrel with 1/2x28 muzzle thread
• Freefloat Trinity Force ECHO KeyMod handguard reduces barrel harmonics
• Complete lower parts kit with mil-spec trigger group
• SOPMOD collapsible stock with integrated storage and QD sling mounts
• Mil-spec carbine buffer tube with standard 3-ounce buffer and USA-made recoil spring
• Black anodized 7075-T6 aluminum upper receiver with M4 feed ramps
• GI-style A2 birdcage flash hider with crush washer

Perfect For

• Shooters building a dedicated .22 LR training rifle
• New shooters learning AR-15 platform fundamentals
• Budget conscious marksmen reducing ammunition costs
• Competitors practicing trigger control and sight picture
• Firearms instructors setting up low-recoil student platforms

Freefloat Handguard and Accuracy

The Trinity Force ECHO KeyMod handguard uses freefloat design to isolate the barrel from handguard pressure, allowing the barrel to vibrate naturally without external interference. This reduces harmonic distortion and improves shot-to-shot consistency compared to traditional drop-in handguards. KeyMod attachment points provide modular accessory mounting for lights, grips, or rail systems without adding unnecessary weight to the 15-inch platform.

Dedicated .22 LR Bolt Group Reliability

The stainless steel bolt group is engineered specifically for .22 LR ammunition, which operates at significantly lower pressures than centerfire cartridges. This dedicated design ensures reliable feeding and extraction across a wide range of .22 LR ammunition types, from standard velocity to high velocity loads. The stainless construction resists corrosion from rimfire propellant residue, extending component lifespan compared to standard mil-spec bolt groups adapted for rimfire use.

Complete Kit Assembly and Components

This full build kit includes all upper and lower components required to assemble a functional rifle except the serialized lower receiver. Included are the upper assembly, bolt carrier group, charging handle, complete lower parts kit, buffer tube, buffer, recoil spring, end plate, castle nut, and SOPMOD stock. The lower receiver must be sourced separately and is the only regulated component required to complete the build.

Practical Stock and Storage

The SOPMOD collapsible stock provides six positions of adjustment for different shooting positions and body armor configurations. Integrated storage compartments hold cleaning supplies, spare ammunition, or small tools, and QD sling mounts allow quick attachment of two-point slings for tactical or training setups. The black finish matches the upper receiver and handguard for a cohesive appearance.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. Lower receiver not included. BCG and charging handle are not included in upper components only.