Davidson Defense Detention 16.5-inch Mid-Gas 1:7 .223 Wylde AR-15 M-Lok Rifle Complete Upper Build

Detention 16.5-inch Mid-Gas 1:7 .223 Wylde AR-15 Freefloat M-LOK Extended Quad Rail Rifle Complete Upper

The Detention is a .223 Wylde AR-15 Complete Upper built around a 16.5-inch mid-length gas platform. The kit centers on a 16.5-inch 4150 steel barrel with a nitride finish, 1:7 twist rate, and 1/2x28 thread pitch, paired with an A2 GI birdcage flash hider and a black 1/2-inch crush washer. A micro low-profile steel gas block at 0.750 diameter and a mid-length stainless steel gas tube are included on the front end. The 7075-T6 aluminum anodized upper receiver features M4 feed ramps, a forward assist, and an ejection port door assembly, paired with a 15-inch freefloat M-LOK extended quad rail handguard in black with a clamp-on G-style design. A USA-made complete AR-15 bolt carrier group compatible with 5.56 NATO, .223 Remington, .300 Blackout, and .350 Legend, and a Mil-Spec AR-15 M4 charging handle complete the upper component set.

Key Features

• 16.5-inch 4150 steel barrel, nitride finish, 1:7 twist, 1/2x28 thread pitch, .223 Wylde
• Mid-length gas system
• Mid-length stainless steel gas tube
• Micro low-profile steel gas block, 0.750
• A2 GI birdcage flash hider, 1/2x28, black 1/2-inch crush washer included
• 7075-T6 aluminum upper receiver, anodized, M4 feed ramps, forward assist, ejection port door assembly
• 15-inch freefloat M-LOK extended quad rail handguard, black, clamp-on G-style design
• USA-made complete AR-15 bolt carrier group, 5.56 NATO and .223 Remington and .300 Blackout and .350 Legend compatible
• Mil-Spec AR-15 M4 charging handle

Perfect For

• Builders sourcing a complete .223 Wylde AR-15 upper with a 16.5-inch nitride 4150 steel barrel, 7075-T6 anodized upper receiver with forward assist, USA-made BCG compatible with multiple calibers, and 15-inch freefloat M-LOK extended quad rail handguard in a clamp-on G-style design ready to pair with their own lower receiver
• Shooters building a 16.5-inch mid-gas .223 Wylde rifle platform who want the USA-made BCG and charging handle covered in one complete upper with a nitride 4150 steel barrel and freefloat M-LOK extended quad rail handguard
• AR-15 builders who want a .223 Wylde complete upper with a USA-made BCG compatible with multiple calibers and a 15-inch freefloat M-LOK extended quad rail handguard in a clamp-on G-style design without sourcing components separately

Barrel and Muzzle Device

The 16.5-inch 4150 steel barrel is chambered in .223 Wylde with a nitride finish, 1:7 twist rate, and 1/2x28 thread pitch, which matches the included A2 GI birdcage flash hider. A black 1/2-inch crush washer, a micro low-profile steel gas block at 0.750 diameter, and a mid-length stainless steel gas tube cover the front end gas configuration on this mid-length platform.

Upper Receiver and Handguard

The 7075-T6 aluminum upper receiver carries an anodized finish with M4 feed ramps, a forward assist, and an ejection port door assembly. The 15-inch freefloat M-LOK extended quad rail handguard is black with a clamp-on G-style design and M-LOK attachment points along the body for accessory mounting. These two components define the exterior structure of the upper assembly on this AR-15 platform.

Bolt Carrier Group and Charging Handle

The USA-made complete AR-15 bolt carrier group is compatible with 5.56 NATO, .223 Remington, .300 Blackout, and .350 Legend. A Mil-Spec AR-15 M4 charging handle is included to complete the upper component set.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws.