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Unlock true flat-shooting, medium-to-long range ballistic performance out of your left-handed AR-15 platform with this premium 100% American-made upper receiver assembly. The PRO2A LEFT HAND 18" 6.5 Grendel Upper anchors a match-ready, premium Melonite-treated 4150 CMV barrel to a true left-handed, left-ejecting Gibbz Arms G4 non-reciprocating billet upper receiver. Complete with a smooth mid-length gas block system, a slim free-float M-LOK handguard, and a pre-headspaced left-handed side-charging bolt carrier assembly, this assembly delivers an exceptionally accurate, ergonomically superior footprint tailored perfectly for southpaw marksmen and hunters.
| Upper Receiver | Gibbz Arms G4 LEFT HANDED Non Reciprocating Side Charging Billet Aluminum Receiver with Gen 2 Handle, M4 Feed Ramps, Type III Hardcoat Anodized Black |
|---|---|
| Charging Style | Left-Side Non-Reciprocating Manual Cocking Handle Assembly (Stays Stationary While Firing) |
| Barrel Length & Steel | 18 Inch Profile, 4150 Chrome Moly Vanadium Steel, Medium Contour, Melonite Treated |
| Caliber | 6.5 Grendel (Type II Face Depth of .136") |
| Twist Rate | 1:8 Twist (Optimized to stabilize standard range, match, and hunting bullet profiles) |
| Gas Operating Block | Mid-Length System, Low-Profile Gas Block Machined from 4140 Steel, Stainless Steel Gas Tube |
| Muzzle Device | Standard 5/8x24 Thread Pitch, A2 Birdcage Flash Hider with Crush Washer Pre-Installed |
| Handguard | 15 Inch Slim Profile Free-Float M-LOK Rail, Competition Top Picatinny Rail, Machined from 6061-T6 Aluminum |
| Manufacturing Origin | 100% Made in the USA with Pro2A Tactical Lifetime Factory Warranty |
The PRO2A LEFT HAND 18" 6.5 Grendel NR Side Charging Melonite Upper directly solves the three biggest hurdles facing precision long-range southpaw builders: managing uncomfortable right-handed debris exhaust, clunky manual manipulations beneath large optics, and erratic parts mismatching. Traditional setups force left-handed shooters to tolerate gas vents drifting directly toward their eyes and hot brass arcing across their visual workspace. Our true mirrored left-eject mechanism preserves an unobstructed field of view. Combined with an 18-inch barrel path and a smooth mid-length gas system, this upper optimizes standard intermediate carrier velocities, generating an incredibly soft impulse that lets you track impacts through your optic continuously without losing your frame.
Moving your manual charging interface to a static side layout fundamentally accelerates your manipulation speeds. You can comfortably charge the chamber or cycle clearing paths from a natural firing position without disrupting your optical line of sight, breaking your cheek weld over the stock, or reaching over the top of massive target turrets. Furthermore, by investing in a master-assembled, pre-headspaced upper receiver system rather than piecing your components together block-by-block, you eliminate dangerous headspace variations and gas cycling problems across disparate manufacturers. Backed completely by Pro2A Tactical's signature Lifetime Factory Warranty and engineered with 100% American craftsmanship, this premium upper converts your platform into a professional, duty-ready long-range asset with absolute confidence.
| SKU | P2ALNR65GACT15MID18-TK |
|---|---|
| Barrel Length | 18 inch |
| Rifle Caliber | 6.5 Grendel |
| Manufacturer | Pro2A Tactical |
