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- Caliber:
- 5.56x45mm NATO
- Barrel Length:
- 16 in
- Barrel Profile:
- M4
- Gas System Length:
- Carbine Length
- Barrel Twist Rate:
- 1-7
- Muzzle Device:
- A2 Flash Hider
- Finish:
- Black Anodized
- Color:
- Black
- Gun Model:
- AR-15
- Fabric/Material:
- 6061-T6 Aluminum
- Handguard Length:
- 10 in
Code: 3Q8-UFH-AR15URAC3-UPP0123
MPN: upp0123
Product Info for Hardened Arms AR-15 5.56 M4 Profile Upper w/Talon Rail & A2 Flash Hider
Looking to build a tested battle rifle?![]()
Hardened Arms 16" M4 is designed to deliver the performance and accuracy you demand. Used by police forces, private contractors and private citizens it is the go to AR15 rifle and pistol configuration. The sixteen inch barrel provides the best mix of ballistic performance, durability and weight savings and maneuverability for our countries infantry. Machined in house from machine gun rated 4150CMV barrel steel with Melonite coating that out performs military interior chrome coating specifications it will last most shooters a lifetime. Chambered in 5.56 NATO Hardened Arms LLC, barrels are stress relieved, air gauged and machined in house to give you the accuracy and reliability that you are looking for.
Whats Your Mission?
Whether you are going to war, patrolling the streets or looking to hit the range with friends the 12in. Talon rail will afford your unlimited configuration options. Front picatinny rail sections at 3, 6 and 9 allow adapter free attachment of bipods, lights and popular accessories. The absence of picatinny along the rear portion of the rail features M-loks for additional mounting options. The smooth Talon rail ensures a day on the range without blisters or irritation from the sharp edges found on traditional quad rails. The handguard is attached to a large aluminum barrel nut via 8x button, head hex screws for secure mounting and easy maintenance. A 16 inch barreled upper will allow you the ballistic velocity for accurate hits out to 500 yards 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.
Fits any mil-spec AR15 lower receiver.
Package Contents:
- Hardened Arms AR-15 5.56 M4 Profile Upper w/Talon Rail & A2 Flash Hider
Ammunition




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Hardened Arms AR-15 5.56 M4 Profile Upper w/Talon Rail & A2 Flash Hider Unavailable & Discontinued Models
List of Unorderable Models
- Hardened Arms Upper Receiver Assembly, AR-15, 5.56 NATO, 16 inch Barrel, M4 Profile, Carbine Length, 1/7 Twist, 1/2x28 Thread, 10 inch Talon Handguard, A2 Flash Hider, Black, upp0123 , MPN: upp0123 , Code: 3Q8-UFH-AR15URAC3-UPP0123

































































































































































































