Davidson Defense Dark Knight 6-inch Pistol-Gas 1:7 .300 BLK AR-15 Freefloat M-LOK Handguard Pistol Full Build Kit, SBR Ready

Dark Knight 6-inch Pistol-Gas 1:7 .300 BLK AR-15 Freefloat M-LOK Pistol Full Build Kit, SBR Ready

The Dark Knight is a .300 AAC Blackout AR-15 Full Build Kit configured for the SBR Ready designation, built around a compact 6-inch pistol-length gas platform. The kit centers on a 6-inch standard profile steel barrel with a nitride finish, 1:7 twist rate, and 5/8x24 thread pitch, paired with a Pershing flash can in steel at 5/8x24 and a black crush washer. A micro low-profile steel gas block at 0.750 diameter and a pistol-length gas tube are included on the front end. The 7075-T6 aluminum anodized upper receiver features M4 feed ramps, an ejection port door assembly, and a forward assist, paired with a 7-inch Airlite Series lightweight honeycomb design freefloat M-LOK handguard with a full-length Picatinny top rail and black anodized finish. A USA-made complete AR-15 bolt carrier group compatible with 5.56 NATO, .223 Remington, .300 AAC Blackout, and .350 Legend, and a Mil-Spec AR-15 M4 charging handle complete the upper side. The lower hardware includes a complete Mil-Spec AR-15 lower parts kit, a Mil-Spec heavy-duty 6-position aluminum carbine buffer tube, a standard 3 oz AR-15 carbine buffer, a standard AR-15 carbine recoil spring, an AR-15 M16 Mil-Spec end plate, and an AR-15 carbine castle nut. This kit ships without a brace and is intended for customers selecting their own final setup. Lower receiver not included.

Key Features

• 6-inch standard profile steel barrel, nitride finish, 1:7 twist, 5/8x24 thread pitch, .300 AAC Blackout
• Pistol-length gas system
• Pistol-length gas tube
• Micro low-profile steel gas block, 0.750
• Pershing flash can, steel, 5/8x24, black crush washer included
• 7075-T6 aluminum upper receiver, anodized, M4 feed ramps, ejection port door assembly, forward assist
• 7-inch Airlite Series lightweight honeycomb freefloat M-LOK handguard, black anodized, full-length Picatinny top rail
• USA-made complete AR-15 bolt carrier group, 5.56 NATO and .223 Remington and .300 AAC Blackout and .350 Legend compatible
• Mil-Spec AR-15 M4 charging handle
• Complete Mil-Spec AR-15 lower parts kit
• Mil-Spec heavy-duty 6-position aluminum carbine buffer tube
• Standard AR-15 carbine buffer, 3 oz
• Standard AR-15 carbine recoil spring
• AR-15 M16 Mil-Spec end plate
• AR-15 carbine castle nut
• SBR Ready configuration

Perfect For

• Builders sourcing a complete .300 AAC Blackout AR-15 pistol full build kit with a 6-inch nitride barrel, 7075-T6 anodized upper receiver, USA-made BCG, and 7-inch Airlite Series honeycomb freefloat M-LOK handguard already included, pairing it with their own lower receiver and selecting their own rear brace or stock
• Shooters building a compact 6-inch pistol-gas .300 BLK platform who want the USA-made BCG, charging handle, and complete buffer system covered without a rear interface commitment
• AR-15 pistol builders who want a .300 AAC Blackout full build kit with a Pershing flash can at 5/8x24 and a 7-inch Airlite Series honeycomb freefloat M-LOK handguard in an SBR Ready configuration without sourcing components separately

Barrel and Muzzle Device

The 6-inch standard profile barrel is chambered in .300 AAC Blackout and constructed from steel with a nitride finish. The twist rate is 1:7 and the thread pitch is 5/8x24, which matches the included Pershing flash can in steel. A black crush washer, a micro low-profile steel gas block at 0.750 diameter, and a pistol-length gas tube cover the front end gas configuration on this pistol-length platform.

Upper Receiver and Handguard

The 7075-T6 aluminum upper receiver carries an anodized finish with M4 feed ramps, an ejection port door assembly, and a forward assist. The 7-inch Airlite Series freefloat M-LOK handguard features a lightweight honeycomb design construction, a black anodized finish, a full-length Picatinny top rail, 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 pistol 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 AAC Blackout, and .350 Legend. A Mil-Spec AR-15 M4 charging handle is included to complete the upper component set.

SBR Ready Configuration

The complete Mil-Spec AR-15 lower parts kit covers the internal lower receiver components. The buffer system includes a Mil-Spec heavy-duty 6-position aluminum carbine buffer tube, a standard 3 oz AR-15 carbine buffer, a standard AR-15 carbine recoil spring, an AR-15 M16 Mil-Spec end plate, and an AR-15 carbine castle nut. This kit ships without a brace, with the brace or stock selection remaining with the buyer.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. Ships without a brace. Do not attach a stock unless compliant with applicable laws. Lower receiver not included.