Davidson Defense Specter 16-inch Carbine-Gas 1:8 5.56 NATO AR-15 Freefloat M-Lok Handguard Rifle Upper Build Kit

Specter 16-inch Carbine-Gas 1:8 5.56 NATO AR-15 Freefloat M-LOK Upper Build Kit

The Specter is a 5.56 NATO AR-15 Upper Build Kit built around a 16-inch carbine-length gas platform. The kit centers on a 16-inch Fiddler match grade M4 profile barrel in 416R stainless steel with a 1:8 twist rate and 1/2x28 thread pitch, paired with a stainless steel 3-port compensator and a stainless steel crush washer. A micro low-profile 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 7000 Series Optimized AR-15 design with a Type III hardcoat anodized black finish and a dust cover pin retention feature, with an ejection port cover, rod, and spring included, paired with a 15-inch freefloat M-LOK handguard in black with a full-length Picatinny top rail. BCG and charging handle are not included.

Key Features

• 16-inch Fiddler match grade M4 profile barrel, 416R stainless steel, 1:8 twist, 1/2x28 thread pitch, 5.56 NATO
• Carbine-length gas system
• Carbine-length stainless steel gas tube
• Micro low-profile gas block, 0.750
• Stainless steel 3-port compensator, 1/2x28, stainless steel crush washer included
• 7000 Series Optimized AR-15 upper receiver, Type III hardcoat anodized black, dust cover pin retention feature, ejection port cover, rod, and spring included
• 15-inch freefloat M-LOK handguard, black, full-length Picatinny top rail
• BCG and charging handle not included

Perfect For

• Builders sourcing a complete 5.56 NATO AR-15 upper build kit with a Fiddler 416R stainless match grade barrel and stainless 3-port compensator, pairing it with their own bolt carrier group and charging handle
• Shooters building a 16-inch carbine-gas 5.56 NATO platform who prefer to select their own BCG while having the stainless match grade barrel, 7000 Series Optimized upper receiver, and freefloat M-LOK handguard covered in one kit
• AR-15 builders who want a 416R stainless match grade barrel with a stainless 3-port compensator and 15-inch freefloat M-LOK handguard with a full-length Picatinny top rail without sourcing components separately

Barrel and Muzzle Device

The 16-inch Fiddler match grade M4 profile barrel is chambered in 5.56 NATO and constructed from 416R stainless steel with a 1:8 twist rate and 1/2x28 thread pitch. The stainless steel 3-port compensator matches the stainless barrel finish at the muzzle end and is included with a stainless steel crush washer. A micro low-profile 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.

7000 Series Optimized Upper Receiver and Handguard

The 7000 Series Optimized AR-15 upper receiver carries a Type III hardcoat anodized black finish and features a dust cover pin retention feature that keeps the ejection port cover pin captured during field use. An ejection port cover, rod, and spring are included. The 15-inch freefloat M-LOK handguard is black with 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 platform.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. BCG and charging handle are not included.