Davidson Defense Coil 18-inch Mid-Gas 1:8 .223 Wylde AR-15 Freefloat M-Lok Handguard Rifle Complete Upper Build

Coil 18-inch .223 Wylde AR-15 Complete Upper

The Coil is built around an 18-inch .223 Wylde barrel with a heavy, spiral-fluted profile machined from 416R stainless steel, paired with a 7075-T6 aluminum upper receiver finished in black anodizing. It pairs a 15-inch Air Lite Series M-LOK free-float handguard with a KAK Industry Big Hole Brake at the muzzle, running on a mid-length gas system. A complete bolt carrier group and Mil-Spec charging handle round out the upper, giving the buyer everything needed on the upper side.

Key Features

• 18-inch .223 Wylde barrel, 1:8 twist, spiral-fluted 416R stainless steel
• Mid-length gas system with micro low-profile steel gas block
• 7075-T6 aluminum upper receiver, black anodized finish
• Air Lite Series 15-inch M-LOK free-float handguard with monolithic Picatinny top rail
• KAK Industry Big Hole Brake
• Complete bolt carrier group and Mil-Spec charging handle included

Barrel and Gas System

The barrel runs 18 inches long, chambered in .223 Wylde and machined from 416R stainless steel with a spiral-fluted, 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 a standard 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 15-inch Air Lite Series M-LOK free-float handguard finished in black, with a monolithic Picatinny top rail running along its length.

Muzzle Device

Capping the muzzle is a KAK Industry Big Hole Brake, threaded to match the barrel's 1/2x28 pattern and 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 upper remain .223 Wylde, which safely fires both 5.56 NATO and .223 Remington ammunition. A Mil-Spec AR-15 M4 charging handle rounds out the upper's operating components.

Follow all manufacturer instructions and safe handling practices.

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