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10.5 inch 5.56 NATO Melonite AR-15 Upper | Fast Shipping

PRO2A 10.5" 5.56 NATO 1/7 Carbine Length Melonite M-LOK AR-15 Upper

22 inch 223 WYLDE Stainless Upper Kit | MOA Guarantee

PRO2A 22" 223 Wylde 1/7 Rifle Length Stainless Premium AR-15 Upper Kit

PRO2A 10.5" 5.56 NATO 1/7 Carbine length Melonite M-LOK AR-15 Upper with Flash Can

Rating:
98 % of 100
Special Price $279.99 $429.99

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.

Bolt Carrier Group: BCG/CH is Optional. Select Nitride or Nickel Boron 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. Nickel Boron provides the slickest surface which reduces friction and where dirt does not easily adhere to. Standard Charging Handle Included if BCG Option is selected. 

Color: Standard Black or FDE or Gray. Standard is Black. Magpul FDE or Magpul Stealth Gray is extra. Look at pictures to see the type/color of receiver and handguard you will receive. 

 

Availability:
In stock
SKU
P2A556GFS12CAR105CAN-TK
PRO2A 10.5" 5.56 NATO 1/7 Carbine Length Melonite M-LOK Upper with Flash Can | Pro2A Tactical

PRO2A 10.5" 5.56 NATO 1/7 Carbine Length Melonite M-LOK AR-15 Upper with Flash Can

Maneuverable Close-Quarters Carbine Platform with Directed Concussion Control

Achieve the ideal blend of ultra-compact maneuverability and aggressive, forward-directed acoustics. The PRO2A 10.5" 5.56 NATO Carbine Length Melonite M-LOK Upper Assembly with Flash Can is engineered specifically to deliver a high-performance front end without the punishing muzzle blast typical of short-barrel configurations. Built around a precision 10.5-inch barrel tuned with a smooth-running carbine gas system, this complete upper receiver features a pre-installed slimline linear flash can that pushes intense short-barrel gases and noise straight downrange away from the shooter. Drops natively onto any standard Mil-Spec AR-15 lower receiver configured as a legal pistol or registered Short Barreled Rifle (SBR). Proudly 100% designed, machined, and precision-assembled in the USA.

Key Features

  • Custom Slimline Flash Can: Pre-installed on the muzzle to handle the sharp blast typical of short 5.56 configurations. It acts as a linear director, projecting noise, concussive pressure, and flash straight forward toward the target to maximize operator comfort.
  • Melonite Barrel Protection: The heavy-duty 4150 CMV steel barrel is fully Nitride/Melonite treated inside and out. This premium chemical hardening vastly extends barrel life against high-velocity pressure spikes, aids thermal dissipation, and counters harsh field element corrosion.
  • Aggressive 1:7 Twist Rate Profile: Specifically button-rifled with a fast 1:7 twist profile to perfectly stabilize heavy duty, tactical, and military-grade projectiles—such as 62-grain and 77-grain match choices—maintaining mechanical accuracy.
  • Reliable Carbine Gas Port Tuning: The carbine-length gas path provides reliable dwell time and consistent cycling pressures across a massive spectrum of factory ammunition, utilizing a low-profile steel gas block tucked cleanly under the handguard.
  • Slim Profile Free-Float M-LOK Handguard: Built from durable 6061-T6 aluminum, the free-float rail isolates barrel harmonic stress to lock in uniform mechanical accuracy while offering extensive M-LOK attachment windows and a continuous top Picatinny rail.

Technical Specifications

Upper Receiver Mil-Spec Forged 7075-T6 Aluminum, M4 Feed Ramps, Type III Hardcoat Anodized Black Finish (Forward Assist & Ejection Port Cover Pre-Installed)
Barrel Length & Steel 10.5 Inch MediumProfile, 4150 Chrome Moly Vanadium Steel, Melonite / Nitride Treated
Caliber 5.56 NATO (Fully backward compatible with .223 Remington ammunition)
Twist Rate 1:7 Twist
Gas Operating Block Carbine-Length System, Low-Profile Gas Block Machined from 4140 Steel, Stainless Steel Gas Tube
Muzzle Device Standard 1/2-28 Thread Pitch, Pre-Installed Slimline Linear Flash Can Redirector
Handguard 12 Inch Slim Profile Free-Float M-LOK Handguard, Extended Profile Partially Tucking the Muzzle Device, Machined from 6061-T6 Aluminum
Manufacturing Origin 100% Made in the USA with Pro2A Tactical Lifetime Factory Warranty

Who Chooses This Upper Receiver?

Tactical Indoor & Close-Quarters Operators

Operators training inside confined environments or indoor lanes select this flash-can-equipped upper. It channels the aggressive acoustic concussion of the 10.5" barrel completely forward and away from adjacent lane operators, eliminating uncomfortable side-blast feedback.

High-Volume Dynamic Trainers

Shooters who run frequent carbine courses, barricade drills, and high-volume target tracking value the lightweight front end of this configuration. The short barrel accelerates target transition speed while minimizing fatigue over long training days.

Custom Pistol & SBR Builders

Enthusiasts wanting to assemble a highly reliable, compact firearm prefer this drop-in assembly. It bypasses the technical hassle of matching gas ports and tuning parts at home while offering a premium build backed by an American lifetime warranty.

More Information
SKU P2A556GFS12CAR105CAN-TK
Barrel Length 10.5 inch
Rifle Caliber 5.56 NATO
Manufacturer Pro2A Tactical
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