The Wallbreaker 16-inch AR-15 5.56 NATO Rifle Upper Build Kit from Davidson Defense is engineered for durability and precision. Centered around a Match Grade "Fiddler" 16" barrel crafted from 416R stainless steel, it features a carbine gas system with a 1:8 twist rate, ensuring reliable and consistent performance. The kit includes a stripped upper receiver made from 7075-T6 aluminum, anodized for corrosion resistance, and designed with M4 feed ramps.
A KeyMod handguard constructed from 6061-T6 aluminum enables easy attachment of accessories while maintaining a lightweight profile. The assembly is completed with a Recoil Technologies micro low-profile gas block and an AR-15 birdcage flash hider, both contributing to the overall reliability of the rifle. This upper build kit is ideal for gunsmiths seeking high-quality components for their AR-15 configuration.
Barrel Name: Match Grade "Fiddler" AR-15 16" 5.56 NATO, Carbine Gas, M4 Profile, 1:8T, 416R Stainless Steel Barrel
Caliber: 5.56x45mm NATO
Barrel Length: 16 inches
Barrel Material: 416R Stainless Steel
Barrel Finish: Stainless
Barrel Profile: M4
Barrel Twist Rate: 1:8
Barrel Gas System Length: Carbine
Thread Pitch: 1/2x28
Gas Block Name: Recoil Technologies Micro Low-Profile Gas Block for .750 O.D Barrel Steel
Gas Block Size: 0.750
Upper Receiver Name: Stripped Upper Receiver with M4 Feed ramps - 7075 T6 Aluminum, Anodized
Upper Receiver Material: 7075-T6 Aluminum
Upper Receiver Finish: Anodized
Handguard Material: 6061-T6 Aluminum
Handguard Style: KeyMod
Muzzle Device Details: AR-15 1/2x28 TPI GI Birdcage Flash Hider 5.56 .223 A2
Muzzle Device Finish: Manganese Phosphate
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