Davidson Defense Silver Vortex 18-inch Mid-Gas 1:8 .223 Wylde AR-15 M-Lok Rifle Full Build Kit

Silver Vortex 18-inch .223 Wylde AR-15 Full Build Kit

The Silver Vortex is a Full Build Kit built around an 18-inch heavy .223 Wylde barrel, machined from 416R stainless steel with spiral fluting, paired with an AR-15 upper receiver machined from 7075-T6 aluminum and finished in black anodizing. It pairs a Series A 15-inch M-LOK Slant-Pro handguard with an AR-15 A2 GI birdcage flash hider at the muzzle, running on a mid-length gas system. A complete bolt carrier group, Mil-Spec charging handle, complete Lower Parts Kit, carbine buffer-system components, and a Special Operations stock round out the rest of the rifle. The lower receiver is not included, leaving the buyer to select and supply that component separately.

Key Features

• 18-inch heavy .223 Wylde barrel, 1:8 twist, 416R stainless steel, spiral fluted
• Mid-length gas system with micro low-profile steel gas block
• AR-15 upper receiver, 7075-T6 aluminum, black anodized finish
• Series A M-LOK Slant-Pro 15-inch handguard with front quad rail and built-in QD mounts
• AR-15 A2 GI birdcage flash hider
• Complete bolt carrier group and Mil-Spec charging handle included
• Special Operations stock
• Complete Mil-Spec Lower Parts Kit and carbine buffer-system components included
• Lower receiver is not included.

Barrel and Gas System

The barrel runs 18 inches long, chambered in .223 Wylde and machined from 416R stainless steel with spiral fluting along its length and a heavy profile. It carries a 1:8 twist rate and a 1/2x28 muzzle thread. Gas cycles back to the action through a mid-length system, running a stainless steel mid-length gas tube and a micro low-profile steel gas block sized to a .750-inch journal.

Upper Receiver and Handguard

The upper receiver is machined from 7075-T6 aluminum and finished in black anodizing, cut with M4 feed ramps for smooth feeding and fitted with an AR-15 forward assist assembly. The ejection port carries a standard .223/5.56 door with its rod and spring installed. Over the barrel sits a Series A 15-inch handguard, a Slant-Pro design finished in black and featuring a full-length flat-top Picatinny rail, a front quad-rail section, built-in QD sling mounts, anti-rotation tabs, and oblong lightening cuts along its length.

Muzzle Device

Capping the muzzle is an AR-15 A2 GI birdcage flash hider, compatible with both .223 Remington and 5.56 NATO. It threads onto the barrel's 1/2x28 pattern and is secured with the included 1/2-inch black crush washer.

Bolt Carrier Group and Charging Handle

A complete AR-15 bolt carrier group is included, made in the USA and listed for use across 5.56 NATO, .223 Remington, .300 Blackout, and .350 Legend. That broader listing describes the BCG itself; the barrel and chambering on this build remain .223 Wylde. A Mil-Spec AR-15 M4 charging handle rounds out the upper's operating components.

Lower Parts Kit and Buffer System

A complete Mil-Spec AR-15 Lower Parts Kit covers the fire-control and lower-control internals needed once a lower receiver is on hand. Behind it sits a Mil-Spec heavy-duty six-position buffer tube, holding a standard AR-15 carbine buffer weighing 3 ounces and a standard USA-made recoil spring. An AR-15 carbine castle nut and Mil-Spec AR-15/M16 receiver end plate secure the buffer tube assembly to the lower.

Stock

Capping off the rifle is a Special Operations stock, matching the buffer tube included with this kit.

Follow all manufacturer instructions and safe handling practices.

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

Lower receiver is not included.