Davidson Defense Twilight Prowess 16-inch Carbine-Gas 1:16 .350 Legend AR-15 Freefloat M-Lok Handguard Rifle Full Build Kit - Summer of 250 Sale

Twilight Prowess 16-inch Carbine-Gas 1:16 .350 Legend AR-15 Freefloat M-LOK Rifle Full Build Kit

The Twilight Prowess is a .350 Legend AR-15 Full Build Kit built around a 16-inch carbine-length gas platform. The kit centers on a 16-inch Balmung M4 profile barrel in 4150 CMV steel with a phosphate finish, 1:16 twist rate, and 5/8x24 thread pitch, paired with a GI birdcage flash hider compatible with .350 Legend, .308 Win, 7.62x39, and .300 Blackout, and a black 5/8-inch crush washer. A micro low-profile steel gas block at 0.750 diameter and a carbine-length stainless steel gas tube are included on the front end. The upper receiver is a USA-made 6061 slick side billet design in 6061 aluminum with an anti-rotation cutout, paired with a 15-inch freefloat M-LOK handguard in black aluminum with a full-length Picatinny top rail. A USA-made AR-15 complete 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 side. The lower hardware includes a complete Mil-Spec AR-15 lower parts kit, a Mil-Spec heavy-duty 6-position buffer tube, a standard 3 oz carbine buffer, a USA-made standard AR-15 carbine recoil spring, an AR-15 M16 Mil-Spec receiver end plate, and an AR-15 carbine castle nut. The SOPMOD style collapsible stock in black nylon reinforced polymer with integrated QD mounts in QPQ nitrided metal hardware and storage compartments rounds out the kit. Lower receiver not included.

Key Features

• 16-inch Balmung M4 profile barrel, 4150 CMV steel, phosphate finish, 1:16 twist, 5/8x24 thread pitch
• Carbine-length gas system
• Carbine-length stainless steel gas tube
• Micro low-profile steel gas block, 0.750
• GI birdcage flash hider, black, 5/8x24, .350 Legend and .308 Win and 7.62x39 and .300 Blackout compatible, black crush washer included
• USA-made 6061 slick side billet upper receiver, 6061 aluminum, anti-rotation cutout
• 15-inch freefloat M-LOK handguard, black aluminum, full-length Picatinny top rail
• USA-made AR-15 complete bolt carrier group, 5.56 NATO and .223 and .300 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 buffer tube
• Standard carbine buffer, 3 oz
• Standard AR-15 carbine recoil spring, made in USA
• AR-15 M16 Mil-Spec receiver end plate
• AR-15 carbine castle nut
• SOPMOD style collapsible stock, black nylon reinforced polymer, integrated QD mounts with QPQ nitrided metal hardware, storage compartments

Perfect For

• Builders sourcing a complete .350 Legend AR-15 full build kit with a USA-made slick side billet upper, USA-made BCG, and SOPMOD style collapsible stock already included, pairing it with their own lower receiver
• Shooters building a 16-inch .350 Legend carbine-gas rifle platform who want a 15-inch freefloat M-LOK handguard with a full-length Picatinny top rail and integrated QD mounts covered in one kit
• AR-15 builders who want a 4150 CMV phosphate Balmung barrel with a compatible GI birdcage flash hider and complete lower parts kit without sourcing components separately

Barrel and Muzzle Device

The 16-inch Balmung M4 profile barrel is chambered in .350 Legend and constructed from 4150 CMV steel with a phosphate finish. The twist rate is 1:16 and the thread pitch is 5/8x24, which matches the included GI birdcage flash hider. The flash hider is compatible with .350 Legend, .308 Win, 7.62x39, and .300 Blackout at the 5/8x24 thread pitch. A black 5/8-inch crush washer, a micro low-profile steel gas block at 0.750 diameter, and a carbine-length stainless steel gas tube cover the front end gas configuration on this carbine-length platform.

Slick Side Billet Upper Receiver and Handguard

The USA-made 6061 slick side billet upper receiver is 6061 aluminum with an anti-rotation cutout. The slick side design removes the forward assist housing from the upper receiver body for a clean exterior profile. The 15-inch freefloat M-LOK handguard is black aluminum with M-LOK attachment points along the body and a full-length Picatinny top rail for optic and 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 AR-15 complete 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.

Lower Parts Kit and Buffer System

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 buffer tube, a standard 3 oz carbine buffer, a USA-made standard AR-15 carbine recoil spring, an AR-15 M16 Mil-Spec receiver end plate, and an AR-15 carbine castle nut. The SOPMOD style collapsible stock in black nylon reinforced polymer features integrated QD mounts with QPQ nitrided metal hardware and storage compartments, pairing with the included Mil-Spec carbine buffer tube and covering the rear stock interface for this build.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. Lower receiver not included.