BHA Precision AR-15 18" 6mm ARC, 15" MLOK Handguard, Black Complete Upper Receiver w/ BCG & CH

Reach farther, shoot flatter, and do it with an AR‑15 that feels like a purpose‑built precision tool. The BHA Precision 18" 6mm ARC Complete Upper turns a standard lower into a long‑range capable rifle with a predator‑class cartridge—delivering velocity, low drag, and tight group potential in a light, shootable package. Built around a precision 18.0" 1:7 twist barrel and finished for durability, this upper is tuned for extended-range accuracy, dependable tracking, and repeatable performance when you need it most.

A rifle‑length gas system (optimized for the 18" tube) smooths the gas impulse for better recoil control and component longevity with precision loads, while the slim 15.0" free‑float M‑LOK handguard keeps weight forward and offers abundant mounting real estate for optics, bipods, and range gear. The barrel is pre-threaded for your choice of muzzle device, and the black‑anodized receiver with forward assist and dust cover gives you a serviceable, corrosion‑resistant foundation.

This variant ships complete — BHA installs and function‑tests a matched Bolt Carrier Group (BCG) and charging handle (CH) so the upper arrives drop‑in ready. Mount an optic, torque your rings, zero, and send—this upper is built to take your AR‑15 well past 5.56 limits with lean, efficient 6mm ARC ballistics.

Precision reach, drop‑in convenience — available now at BattleHawk Armory.

Key Features & Specifications

• Caliber: 6mm ARC

• Barrel Length: 18.0" precision barrel (1:7 twist, optimized for modern 6mm projectiles)

• Barrel Finish / Material: Durable Black Nitride style finish for enhanced wear & corrosion resistance

• Gas System: Rifle‑length — tuned for smooth cycling and reduced felt recoil with precision loads

• Handguard: 15.0" free‑float M‑LOK — low‑profile, lightweight, and accessory‑friendly

• Muzzle Thread: Pre‑threaded (user installs preferred muzzle device; device not included)

• Upper Receiver: Black anodized with forward assist & dust cover (mil‑spec fitment)

• Included: Matched Bolt Carrier Group (BCG) and Charging Handle (CH) — installed & function‑tested

• Platform Compatibility: AR‑15 (drops onto standard mil‑spec lower)

• Intended Use: Precision carbine / prairie dog rigs, PRS‑style fun, medium‑range hunting, suppressed/unsuppressed adaptable platforms