Experience the devastating performance of the 8.6 Blackout (8.6 BLK) (.338 Blackout) with our selection of high-performance complete upper receivers. Engineered to be the "big brother" to the 300 BLK, the 8.6 Blackout brings massive .338-caliber power to the AR-10 and LR-308 platforms. These complete upper assemblies utilize a revolutionary 1:3 fast-twist barrel to stabilize heavy subsonic projectiles, creating immense rotational energy that delivers unparalleled terminal ballistics upon impact. Whether you are hunting large game or building a dedicated suppressed "thumper," our 8.6 Blackout uppers provide the perfect balance of stealth and knockdown power.
Every 8.6 BLK complete upper in our inventory is optimized for the unique requirements of this short-case, large-bore cartridge. Built on the popular DPMS pattern, these uppers feature specialized gas porting to ensure 100% reliable cycling with both subsonic and supersonic ammunition. To guarantee long-term durability, our builds offer optional high-pressure bolt carrier groups (BCG) with standard .308 bolt faces, making them a seamless "plug-and-play" upgrade for your existing large-frame lower. From compact 8-inch pistol uppers to full-length 16-inch hunting rigs, our 8.6 Blackout uppers arrive headspace tested with Manson Go and No-Go gauges and ready to deliver the silent, hard-hitting performance that has redefined the modern sporting rifle.
Shop our inventory of 8.6 Blackout UPPER ASSEMBLIES and customize them to your taste at AR15 Elite. We have a variety of uppers with options for your next AR-10 upper to make it just how you want it. 8.6 Blackout is a excellent cartridge trimmed down from 6.5 creedmoor and necked up for a 338 projectile for heavy mass bullets. Its a great round for hunting or personal defense with a wide variety of bullet grain weights to choose from for that ultimate subsonic experience. Browse our inventory online now to start your 8.6 Blackout build now.
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308 | 338 ARC | 300 Blackout