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7.5 inch AR-15 AR15 Non Reciprocating Side Charging 45 ACP Upper w/CAN

PRO2A 7.5" 45 ACP 1/16 Pistol Caliber NR Side Charging Melonite M-LOK Upper with Flash Can

5.5 inch 40 S&W NR Side Charging PCC Upper USA MADE

PRO2A 5.5" 40 S&W 1/16 Pistol Caliber NR Side Charging Melonite M-LOK Upper with Flash Can

PRO2A 10.5" 45 ACP 1/16 Pistol Caliber NR Side Charging Melonite M-LOK Upper

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Special Price $559.99 $709.99
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SKU
P2ANR45ACPAX9OO105-HT
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PRO2A 10.5" .45 ACP 1/16 NR Side Charging Melonite M-LOK AR9/AR45 Upper

PRO2A 10.5" .45 ACP 1/16 Pistol Caliber NR Side Charging Melonite M-LOK Upper

Bring the hard-hitting, subsonic authority of the classic .45 ACP cartridge to a modern AR-platform layout with the PRO2A 10.5" .45 ACP Non-Reciprocating (NR) Side Charging M-LOK Upper Receiver Group. Precision-engineered for maximum operating efficiency and smooth cycling, this premium complete upper receiver drops onto dedicated pistol caliber lower receivers (configured for Glock or profile-compatible magazines). Shifting the charging system to a stationary, left-side location eliminates standard rear handles and provides a clear manual setup beneath large optics and red dots. Built around an ultra-durable 1/16 twist Melonite barrel and a specialized ramped blowback carrier group, it delivers massive close-range stopping power.

Key Features

  • Non-Reciprocating Left-Side Handle: The side charging handle remains completely stationary while the weapon fires, shielding the operator's hands and clearing low-profile optic mounts or red dots.
  • Heavy-Hitting .45 ACP Subsonic Ballistics: Purpose-built to optimize the heavy-grain .45 ACP cartridge in a compact, legal pistol or SBR platform configuration.
  • Advanced Melonite Barrel Protection: The premium 4150 CMV steel barrel is fully treated with an advanced Salt Bath Melonite finish inside the bore and across the exterior to extend service life and maximize corrosion resistance.
  • Optimal 1/16 Twist Rate: Precision button-rifled with a dedicated 1:16 twist profile designed specifically to stabilize heavy-grain 230gr standard and specialized defensive projectiles.
  • Reliable Direct Blowback System: Utilizes a specialized gas-less direct blowback operating block, engineered with optimized bolt geometry to deliver reliable feeding and extraction cycles.
  • Slim Profile Free-Float M-LOK Handguard: Machined from high-strength aluminum, the lightweight rail protects internal parts and accommodates modular grips, lights, and tactical gear.

Technical Specifications

Upper Receiver Assembly Gibbz Arms G9 Premium Non-Reciprocating Side Charging Billet Upper Receiver, Dedicated Pistol Caliber Slick-Side Layout (No Forward Assist), Type III Hardcoat Anodized Black Finish
Charging Handle Left-Side Non-Reciprocating Charging Handle Assembly (Stationary During Firing Cycle)
Barrel Component 10.5 Inch Profile, 4150 Chrome Moly Vanadium Steel, Melonite Treated Interior & Exterior Bore
Caliber .45 ACP (Pistol Caliber)
Twist Rate 1:16 Twist
Operating System Direct Blowback (No Gas Block/Tube Required)
Muzzle Device Component Standard 5/8x24 Thread Pitch, Enlarged to 45 Cal, A2 Birdcage Flash Hider with Crush Washer Pre-Installed
Handguard Rail 9 Inch Slim Profile Free-Float Aluminum Handguard, Continuous Top Picatinny Alignment, Modular M-LOK Attachment Points
Manufacturing Origin 100% Assembled and Quality Checked in the USA with Pro2A Tactical Lifetime Factory Warranty

Why Buy This Product?

Piecing together an AR-platform pistol caliber carbine (PCC) in .45 ACP often exposes builders to cycling or feeding failures due to unmatched bolt weights and poor manual controls. The PRO2A 10.5" .45 ACP Non-Reciprocating Side Charging Upper directly resolves this by engineering a complete, pre-headspaced blowback group that interfaces reliably. Traditional rear-charging handles force you to break your cheek weld when clearing issues under low-mounted red dots, but this left-side manual cocking mechanism lets you run the bolt while keeping your eyes firmly on the target. Hand-built and test-fitted in the USA, this upper yields an exceptionally flat-shooting, big-bore defense platform without requiring custom component tuning or individual hardware premiums.

More Information
SKU P2ANR45ACPAX9OO105-HT
Barrel Length 10.5 inch
Pistol Caliber 45 ACP
Manufacturer Pro2A Tactical
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