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OPTION DETAILS
HANDGUARD: Want to tuck your suppressor inside the rail? Now you can with the Aero Precision Enhanced Gen 2 M-LOK Handguards. Choose from the available lengths in the options menu. Check and verify the dimensions of your suppressor and the handguard. Available in Black only.
GAS BLOCK: Standard or Adjustable. Adjustable is a great option if you are using a suppressor or just want to fine tune your system.
MUZZLE DEVICE: Standard A2 Flash Hider or Competition Muzzle Brake. Muzzle Brakes are for recoil reduction. The baffles and ports are milled larger to drive pressure up and to keep the muzzle down more effectively.


LEFT HAND Bolt Carrier Group: BCG/CH is Optional. Select Nitride if you need a BCG to complete Upper . All our BCGs are M16 Profile, Properly Staked Gas Key, MP Tested, 8620 Carrier, 9310 Bolt. Nitride is a surface hardening process that creates a tough and slick surface. Standard Charging Handle Included if BCG Option is selected.
Conquer modern hunting mandates and dense timber navigation without typical right-hand frame compromises. The PRO2A Left Hand 10.5" 350 Legend Pistol Length Upper Receiver Assembly is engineered from the ground up for southpaw shooters utilizing the highly efficient, straight-walled .350 Legend cartridge. Featuring a fully mirrored port layout, this upper safely isolates heavy gas blowback and expanding combustion debris out the left side—completely clearing a left-handed shooter's face and line of sight. Its compact 10.5-inch barrel setup yields an exceptionally fast-handling profile that drops natively onto any Mil-Spec lower receiver configured as a legal pistol or registered SBR. Proudly 100% designed, machined, and hand-assembled in the USA.
| Receiver | Dedicated Left Hand (Left Eject), Billet Aluminum, Single Large Feed Ramp, Type III Hardcoat Anodized Black |
|---|---|
| Barrel Length & Steel | 10.5 Inch Medium Profile, 4150 Chrome Moly Vanadium Steel, Melonite Treated |
| Caliber | 350 Legend (Approved straight-walled hunting cartridge configuration) |
| Twist Rate | 1:16 Twist |
| Gas Operating Block | Pistol-Length System, Low-Profile Gas Block Machined from 4140 Steel, Stainless Steel Gas Tube |
| Muzzle Device | 350L Thread Pitch (5/8-24 Threads), A2 Birdcage Flash Hider with Crush Washer |
| Handguard | 9" Slim Profile Free-Float M-LOK Rail, Machined from 6061-T6 Aluminum |
| Manufacturing Origin | 100% Made in the USA with Pro2A Tactical Lifetime Factory Warranty |
Sportsmen operating in restricted straight-wall states (such as Ohio, Michigan, Iowa, and Indiana) choose this configuration to build a lightweight, legal left-handed AR hunting pistol that keeps flying brass out of their face during critical follow-up tracking shots.
Hunters who spend their time in dense timber or cramped tree stands value the ultra-short 10.5-inch overall footprint. It eliminates snag hazards and allows for effortless target swinging inside tight physical blinds while retaining lethal medium-range energy drops.
Enthusiasts wanting a hard-hitting projectile without excessive cyclic kick choose the 350 Legend. The combination of its straight-walled design and soft pistol-length gas system delivers low felt recoil, perfect for younger hunters or high-volume practice sessions.
| SKU | P2AL350AX9PIS105-HT |
|---|---|
| Barrel Length | 10.5 inch |
| Rifle Caliber | 350 Legend |
| Manufacturer | Pro2A Tactical |