Tacfire 18" Complete Upper Assembly .308 Win 1:10, Black - BU-308-18
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TacFire
Overview
The Tacfire 18" Complete Upper Assembly is specifically designed for the AR-15 platform, chambered in .308 Win, making it suitable for a variety of shooting applications. With an 18-inch barrel and a 1:10 twist rate, this upper assembly optimizes bullet stability and accuracy for heavier projectiles, providing solid performance in both target shooting and hunting scenarios. This upper is commonly found in builds that leverage the .308 Win caliber for enhanced stopping power and versatility.
Specifications
Available Merchants(5)
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August 2026 on GunPartPicker
Tacfire 18" Complete Upper Assembly .308 Win 1:10, Black - BU-308-18 ranked #71 of the 690 upper receivers builders added on GunPartPicker in August 2026. Builders have been adding it to their builds on GunPartPicker since January 2026. All time, it ranks #46 of the 1,574 upper receivers builders have added. Builds with this upper receiver are nearly all chambered in .308 Win and nearly all AR-10.
It was hard to find in August 2026, in stock on only 11 of the 24 days we checked, and today none of the 5 retailers we track has it in stock right now. The best price crept up from $391.44 to $441.99 over August 2026. Listed prices start at $395.23 at BattleHawk Armory for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 retailers
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