PRO2A 7.75" 8.6 Blackout 1/3 Pistol Length Melonite M-LOK AR-10 Upper with Flash Can

Product Overview

The Pro2A 7.75" 8.6 Blackout Pistol Length Upper Receiver with integrated Flash Can delivers a highly advanced, ultra-compact upgrade for large-frame firearms. Chambered in the devastating 8.6 Blackout (8.6x43mm), this premium upper utilizes a hyper-fast 1:3 twist rate matrix to fully stabilize heavy subsonic or high-velocity supersonic projectiles out of a short barrel profile. Equipped with a linear flash can blast redirector, this assembly forces concussion, noise, and expanding muzzle gases straight downrange away from the operator, making it an excellent platform for close-range utility configurations.

NOTE: MUST BE PAIRED with our Pro2A Tactical Stripped or Complete AR-10 Lower Receivers for seemless compatibility and trouble free fitment. As there is NO milspec standard for the AR-10 Platform, we do not guarantee fitment with other manufacturer's AR-10 Lower Receivers.

Key Features

Hyper-Fast 1:3 Ultra-Fast Twist: Imparts critical rotational velocity to perfectly stabilize massive, high-grain hunting projectiles, maximizing immediate energy transfer while preventing baffle strikes.
Integrated Muzzle Flash Can: Directs intense large-caliber blast concussion, sound pressure, and expanding flash signature straight downrange away from the shooter's line of sight and grip.
DPMS High Profile Modularity: Machined to exact high-profile specifications to ensure flawless lock-up and perfect alignment with matching standard large-frame lower receivers.
Corrosion-Resistant Melonite Treatment: The premium Melonite treated bore and exterior surfaces maximize lifecycle reliability and weather resistance under harsh outdoor conditions.

Technical Specifications

Upper Receiver	LR-308 / AR-10 Format, DPMS High Profile Specification, Billet 7075-T6 Aluminum, Hardcoat Anodized Black (Forward Assist & Dust Cover Pre-Installed)
Barrel Length & Profile	7.75-Inch Medium Duty Contour
Caliber	8.6 Blackout (8.6x43mm)
Twist Rate	1:3 Ultra-Fast Twist
Barrel Material & Treatment	4150 Chrome Moly Vanadium Steel, Premium Corrosion-Resistant Melonite Finish
Gas Operating Block	Pistol Length Direct Impingement, Low-Profile Steel Gas Block, Stainless Steel Gas Tube
Muzzle Thread & Device	5/8-24 Thread Pitch, Slimline Linear Flash Can Blast Redirector
Handguard Rail	10" Slim Extended Free-Float M-LOK Handguard, Machined from 6061-T6 Aluminum with Top Picatinny Rail Layout (Flash Can Partially Recessed)
Manufacturing Origin	100% Made in the USA with Pro2A Tactical Lifetime Factory Warranty

Who Chooses This Upper Receiver?

Big-Bore Hunting Operators

Hunters who target large hogs, deer, or bear in dense timber landscapes rely on this 7.75-inch 8.6 Blackout build. It delivers hard-hitting terminal energy out of a compact, fast-handling pistol or SBR frame.

Tactical Suppression Marksmen

Shooters tracking silent operations select this hyper-spin 1:3 layout to leverage subsonic ammunition. The fast twist stabilizes heavy projectiles perfectly, avoiding baffle strikes while creating devastating close-to-medium range performance.

AR-10 Builders Demanding Drop-In Modularity

Custom gunsmiths aiming to update a standard large-frame lower into an innovative, heavy-hitting utility weapon choose this complete upper. It snaps easily onto DPMS high-profile frames, bypassing home assembly risks.