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18" 7.62x39 Melonited AR15 Upper 12" HD Quad Rail
On Target With
Savings Of
$80.00
Original Price $349.99
Sale Price $269.99
7.62x39 upper receiver in 18" length packs a punch and brings precision and dependability to the AR-15 platform!

The 7,62x39 AK round is an interesting beast. A .30 caliber round that is used by half the armies in the world, it has some great features that have earned it its place in history and on the world stage. First and foremost is knock down power, delivering tremendous kinetic energy, there is no doubt it is an effective round. Affordability and availability is also one of the things that makes the 7.62x.39 caliber so popular. However the AK though reliable, has many accuracy issues and is not known for precision, bring that caliber to the much more consistent and accurate AR15 platform and suddenly you have the best of many worlds. With an 18" barrel for better stability and accuracy, coupled with affordable and available ammo you have a versatile and precision AR15 upper receiver for either hunting or self defense.


Specifications:
-Hardened Arms M4 Feed Ramp Flat Top Receiver
-Forged 7075 aluminum upper receiver
-Feed ramps for increased feeding reliability on barrel and upper
-Chrome Moly High End Steel Barrel
-Chambered in 7.62x39mm
-18" H-BAR Profile barrel
-1/10 Barrel Twist
-.750" diameter at gas block
-5/8x24 threaded muzzle/barrel
-Low profile gas block
-Barrel dimpled to secure gas block
-Mid length gas system
-A2 flash hider
-12" HD Quad Rail free float handguard

Hardened Arms uppers are made in the USA, with 4150 CMV stress relieved, air gauged highly accurate, head spaced barrels. Quality inspected and test fired prior to shipping our 7.62x39 uppers utilize all of the performance  features necessary maximum reliability and performance. At factory direct prices you will be amazed at the affordability and accuracy of this 7.62x39 Hardened Arms LLC upper.
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4150CMV Barrel Steel
Whether starting with our 4150CMV machine gun barrel steel or highly refined 416R stainless steel our barrels are a cut above the rest. Engineered for accuracy and durability they are double nitrogen stress relieved and sodium nitrate coated/melonited (raw stainless steel is polished with melonited extensions). Index pins that lock into the upper receiver are pinned into the barrel through the extension on melonited barrels meaning the extension will never come loose. Machined in house on state of the art CNC equipment we deliver a barrel with every spec carefully controlled for peak performance.
 
Rail Lock Free Float Handguard
Machining our handguards in house provides us the opportunity to integrate features not found on most rails in the industry. Our rail lock feature, is designed to dovetail around your upper reciever insexing to insure a perfectly aligned rail that extends over the end of the upper reciever enough to do away with the unsightly gap found on lesser quality rail to receiver match ups. Combined with 6061-T6 aluminum with class II type III, hard coat anodized finish to match our uppers, fit and finish are top notch. Hardened Arms has many rail styles to choose from that are both stylish and functional. Our handguard offerings include quad rails, reduced weight rails, ergonomic smooth rails, skinny competition rails and our innovative patented Lumashark(R) illuminated rail with high lumen lights built in. Hardened Arms rails come in a variety of lengths and choices to meet your mission specific needs. .
 
Attention to detail.
It's the attention to detail that sets Hardened Arms apart. Items such as our machined in house 'Jam Nut' ensure ease of changing muzzle devices and indexing flash hiders while being fully re-useable. Crush washers are a thing of the past as they are single use and can induce stress and cause problems if used improperly. Bull barrels use shims to time your muzzle device without adding to the diameter of the already rigid barrel.

Alignment dimples are also machined into your barrel at the same time the gas port is drilled to provide 100% accurate positioning of your gas block and to keep it securely in place in spite of recoil. We machine our gas blocks and adjustable gas blocks right here from 4150 US barrel steel to give you the strongest and most durable product possible..
Hardened Arms uppers are high end, accurate, head spaced, inspected and test fired prior to shipping. They are built using stringent specs, top quality parts and procedures to ensure maximum reliability and performance.

You are responsible for knowing your state laws regarding barrel lengths, pistol and short barreled rifle restrictions. 20% restocking fees if you cancel anytime after you order or can not take delivery due to state restriction. Dealer programs are available on our website. Two year warranty against manufacturer defects. Finishes will wear with use, no warranties apply to finish wear. Fits any mil-spec AR15 lower receiver.
 
515 Tucker Ave Friday Harbor, WA 98250 | sales@hardenedarms.com
Phone: 425-530-0837