Kak Industry Llc. K-SPEC 5.56 NATO 14.5'' BBL 1-7 TWIST COMPLETE UPPER BLACK 450-1010-061-A-B

Brownells and KAK Industry have partnered to build the best performing complete upper at an unbeatable price. This premium complete upper features a chrome-lined barrel, chrome-lined phosphate K-SPEC Enhanced BCG, Brownells-exclusive PentaComp muzzle device, and a rock-steady free-float KAK Industry MLOK handguard. 100% American made for years of dependable service.

The K-SPEC Down Vent BCG represents unrivaled reliability, featuring Slotted Angled Carrier Rails, Dual Ejectors, and downward gas vents that redirect gas underneath the carrier instead of out at the shooter’s face. For suppressed shooting with a traditional baffle can, the K-SPEC down vent BCG is a game-changer.

This complete upper features:

• Forged 7075 T6 Upper Receiver
• Mid-Length gas system
• 1/2x28 muzzle threads with Brownells-exclusive PentaComp device
• Chrome-lined phosphate K-SPEC Enhanced BCG
• Large Billet Latch enhanced charging handle

SKU: 430110224

• 16” 4150 CrMoV chrome-lined barrel with 1:7” twist rate, twice stressed relieved
• 15” MLOK handguard with heavy-duty barrel nut

SKU: 430110225

• 13.9” 4150 CrMoV chrome-lined barrel with 1:7” twist rate, twice stressed relieved
• 13” MLOK handguard with heavy-duty barrel nut

SKU: 430110226

• 14.5” 4150 CrMoV chrome-lined barrel with 1:7” twist rate, twice stressed relieved
• 13” MLOK handguard with heavy-duty barrel nut

Each upper is test fired to ensure reliable function.