PRO2A LEFT HAND 12.5" 350 Legend 1/16 Pistol Length Melonite M-LOK AR-15 Upper
Product Overview
Engineered specifically for Southpaw hunters and modern tactical operators, the PRO2A Left Hand 12.5" 350 Legend Pistol Length Melonite M-LOK Upper delivers hard-hitting straight-wall cartridge performance in a compact, highly maneuverable platform. This fully assembled complete upper receiver brings the heavy-hitting impact of the 350 Legend caliber to left-handed firearms users. Built with a robust 12.5-inch 4150 CMV Melonite-treated barrel and a dedicated left-ejecting bolt carrier group, this premium upper drops seamlessly onto any standard AR-15 lower receiver configured as a pistol or registered short-barreled rifle (SBR).
Key Features
- Dedicated Left-Hand Configuration: Mirrored receiver architecture ejects spent casings and harsh blowback gas to the left side, providing a clean, distraction-free sight line for left-dominant shooters.
- Maneuverable 12.5-Inch Barrel: Offers an ideal balance of quick handling in thick brush or tight spaces while effectively burning modern straight-wall powders for maximum kinetic transfer.
- Premium Melonite (QPQ Nitride) Finish: The high-grade 4150 CMV barrel features a uniform Melonite layer inside and out, supplying elite defense against bore erosion, extreme heat, and harsh weather.
- Standard 1:16 Twist Rate: Precision rifling cycle tailored perfectly to properly stabilize common hunting and range loads spanning from 145gr up to heavy 180gr straight-wall hunting bullets.
- Slim Free-Float M-LOK Handguard: A 12-inch lightweight handguard shrouds the barrel to maximize grip real estate while supporting modular M-LOK mounting systems for lights, bipods, and accessories.
Technical Specifications
| Caliber / Chamber | 350 Legend |
|---|---|
| Barrel Length | 12.5 Inches |
| Barrel Material | 4150 Chrome Moly Vanadium (CMV) Steel |
| Twist Rate | 1:16 Button Rifled Twist |
| Barrel Finish | Melonite / QPQ Nitride Finish |
| Gas System Length | Pistol-Length Gas System with 0.750" Low Profile Gas Block |
| Upper Receiver | Left-Hand Ejection Billet Aluminum, M4 Feed Ramps, Type III Hardcoat Anodized |
| Handguard | 10" Slim Free-Float M-LOK Handguard (6061-T6 Aluminum) with Full Top Picatinny Rail |
| Muzzle Thread & Device | 5/8x24 TPI; Standard Heavy-Bore A2 Flash Hider |
| Manufacturing Origin | 100% Made in the USA |
Why Choose the PRO2A Left-Handed 350 Legend Upper?
The 350 Legend has fast become a top choice for deer hunters in straight-wall mandate states, providing substantial energy out to 250 yards with minimal recoil. However, for a left-handed shooter, firing a high-pressure straight-walled cartridge out of a traditional right-hand ejection port leads to hot unburnt residue blowing straight back into the face. Pro2A Tactical remedies this safety issue completely with a dedicated left-ejecting upper receiver group. When you pair this safe, comfortable layout with a 12.5-inch compact velocity profile and complete American-made construction, you get a highly effective, fast-handling hunting and defensive setup customized specifically for the Southpaw shooter.
