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16" 5.56 HBAR Melonited 1/7 Upper w/ 10" HD Quad Upper
On Target With
Savings Of
$120.00
Original Price $369.99
Sale Price $249.99
Whats your rifle built for?

If you looking for that edge in accuracy over the shooters that refuse to progress past a M4 this setup is for you. Full length picatinny rails on all four sides means your vertical foregrip, back up iron sights, mounted flashlight and tactical kitchen sink will be right in any position. The handguard is mounted to a large aluminum barrel nut via 8x button head hex screws for secure mounting and easy future maintenance. A 16 inch barreled upper will allow you the ballistic velocity for accurate hits out to 600yds while being light enough to carry all day long.

Worry free operating.

If there is on thing you should never doubt is the company behind the rifle you rely on. We are known for our customer service and strive to treat our customers like family. Our uppers fit all "mil-spec" lower receivers and  are designed to last a lifetime. We machine our parts in house so we can stake our name on every part that leaves our shop. When you buy from Hardened Arms your buying from the machine shop, so you get the highest quality parts, with no middle men at prices that leaves most gun shops to shame.


16" 5.56mm HBAR 1/7 AR15 Upper Assembly Specifications:

  • Hardened Arms M4 Feed Ramp Flat Top Receiver
  • Black anodized mil-spec finished upper receiver
  • Feed ramps for increased feeding reliability on barrel and upper
  • Laser etched T-Marked upper receiver
  • 4150CMV Stress Relieved Button Rifled Machined In House Barrel
  • Black Melonite QPQ Finish
  • 6-Groove, 1/7 twist button rifled
  • Chambered in 5.56 NATO (will also fire .223 ammo)
  • 16" HBAR Profile barrel with M4 Extension
  • .750" diameter at gas block
  • 1/2x28 threaded muzzle/barrel
  • Low profile Hardened Arms gas block
  • Barrel dimpled to secure and align gas block
  • Carbine length gas system
  • A2 flash hider

Fits any mil-spec AR15 lower receiver.

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. A 20% restocking fee will apply if you cancel any time after you or
UPPER ASSEMBLY
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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