Davidson Defense Sabretooth 20-inch 22 ARC Freefloat M-Lok Handguard Rifle Full Build Kit

Sabretooth 20-inch 22 ARC Freefloat M-Lok Handguard Rifle Full Build Kit

This is a complete 22 ARC rifle build featuring a 20-inch Bear Creek Arsenal nitride barrel paired with a billet upper receiver, freefloat M-Lok handguard, and a full complement of lower components. The 1:7 twist rate is optimized for .22 ARC ammunition, and the rifle-length gas system provides reliable cycling. Everything you need to assemble a functional rifle is included except the lower receiver.

Key Features

• 20-inch Bear Creek Arsenal nitride barrel with 1:7 twist rate optimized for .22 ARC
• Black Diamond Series billet aluminum upper receiver, slick-side configuration
• 15-inch freefloat M-Lok handguard with extended Picatinny rail sections
• AR-15 6.5 Grendel II complete bolt carrier group with QPQ nitride finish
• Mil-Spec AR-15 lower parts kit with standard carbine recoil spring and buffer
• Adaptive Tactical EX Performance adjustable carbine stock with QD sling swivel
• Rifle-length gas system with micro low-profile steel gas block
• A2 GI birdcage flash hider with 1/2x28 threads and crush washer included

Perfect For

• Shooters building a precision or target-focused .22 ARC rifle
• Builders seeking a complete upper and lower component package
• Those wanting a freefloat handguard for improved accuracy potential
• Shooters who prefer billet upper receivers for aesthetics and durability

Billet Upper Receiver Design

The Black Diamond Series billet upper receiver is machined from solid aluminum and features a slick-side configuration without a forward assist. This design is favored by builders who prioritize a clean profile and reduced weight. The billet construction provides tight tolerances and a precision appearance compared to forged uppers.

M-Lok Freefloat Handguard System

The 15-inch freefloat handguard isolates the barrel from the upper receiver, eliminating contact that can affect accuracy. M-Lok slots along the extended Picatinny rail sections allow mounting of lights, grips, and other tactical accessories. The clamp-on design secures the handguard without requiring barrel nut tools.

22 ARC Caliber and Barrel Optimization

The .22 ARC caliber is a modern intermediate cartridge designed for AR-15 platforms. The 1:7 twist rate and 20-inch barrel length work together to stabilize .22 ARC ammunition across a wide range of projectile weights. The Bear Creek Arsenal barrel uses black nitride finish for corrosion resistance and durability.

Complete Lower Assembly

The kit includes a mil-spec lower parts kit, standard 3-ounce carbine buffer, standard recoil spring, and a 6-position carbine buffer tube. The Adaptive Tactical EX Performance stock features rapid-adjust length-of-pull and an integrated QD sling swivel. Castle nut and end plate are included and ready to install.

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 the upper assembly, but a complete bolt carrier group and charging handle are included with this full build kit.