The Smoke Stack 18-inch Mid-Gas 1:8 .223 Wylde AR-15 Freefloat M-Lok Handguard Rifle Upper Build Kit is engineered for precision and adaptability in customizing AR-15 platforms. Featuring an 18-inch heavy barrel made from 416R stainless steel, this kit incorporates a spiral fluted profile and a nitride finish for increased durability. The 1:8 twist rate accommodates a wide range of .223 Wylde ammunition, while the mid-length gas system optimizes reliability.
The 15-inch “Avalon” M-Lok handguard, constructed from lightweight 6061-T6 aluminum, provides ample space for accessories and customization. The integrated "Panhead" billet upper receiver is anodized for corrosion resistance and boasts a .458 ejection port door. Additionally, the kit includes an AR-15 1/2x28 TPI GI birdcage flash hider, finished in manganese phosphate. This upper build kit combines functionality and quality, perfect for the discerning gunsmith.
Caliber: .223 Wylde
Barrel: 18" 223 Wylde 416R Stainless Steel Spiral Fluted Heavy Barrel
Barrel Length: 18-inch
Barrel Material: 416R Stainless Steel
Barrel Twist Rate: 1:8
Barrel Gas System Length: Mid-Length
Barrel Thread Pitch: 1/2x28
Barrel Finish: Nitride
Barrel Profile: HBAR
Handguard: "Avalon" AR-15 15" MLOK Handguard
Handguard Length: 15-inch
Handguard Material: 6061-T6 Aluminum
Handguard Color: Black
Handguard Style: M-Lok
Upper Receiver: "Panhead" Billet Upper Receiver (NOFA) .458 Ejection Port Door
Upper Receiver Material: 6061-T6 Aluminum
Upper Receiver Finish: Anodized
Muzzle Device: AR-15 1/2x28 TPI GI Birdcage Flash Hider
Muzzle Device Finish: Manganese Phosphate
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