Huldra Mark IV Tactical Elite.

Barrel Twist: 1:7 Right Hand - M4 Feed Ramps. Barrel Profile: Government Contour. Barrel Material: CrMoV 4150. Barrel Coating: Melonite. Barrel Lining: Melonite. Upper Receiver: Dry Film Lubed - T Marked. Gas System: Mid Length. Stock: Vltor IMod Mil-Spec. Grip: Ergo Ambi. Fore Arm: Free Float extended Quad Rail; 1913 Mil-Spec; 6061 T6 Aluminum. Rail Length: 12" EXP. Rail Width: 2.2". Rail Height: 2.45". Flash Hider: A2 Flash Hider. 100 Meter Accuracy: 1 MOA. The mid-length piston system will give you the benefits of a longer free float forearm (with anti-rotational tabs) and extends along the sides and bottom of the gas block, giving you a longer, more ergonomic grip, as well as a longer sight radius between the front and rear sights for quicker acquisition and less felt recoil. The piston system parts and the barrel have been treated with salt nitride meloniting process, making them harder than hard chrome. The 4.5 pound JP Trigger gives you a perfectly crisp, precise break and extremely short reset. The complete absence of take-up and over-travel provides the best combination of speed and precision on the market. The ambidextrous safety allows you to flip off the safety on either side of the weapon. The rugged Mil-Spec Vltor IMod Stock has an extremely comfortable superior cheek weld with a non-slip removable butt pad. Each side compartment of The Vltor IMod can hold two AA or three lithium CR123 3-volt batteries and accepts a push-button, quick detachable sling swivel. The Ergo Grip is solid and comfortable. The Huldra Mark IV series of rifles is manufactured for Mills Fleet Farm by Adams Arms. Centerpiece of Huldra Mark IV series of rifles is Adams Arms proprietary piston system. The gas block is a Picatinny style gas block and sits at the same height as the upper receiver. The gas block is set up with 3 different gas setting that are easily adjusted by pressing down the detent pin and rotating the gas plug either clockwise or counter-clockwise. The 12 o’clock position is the full or open position and should be used with normal fire. The 1 o’clock position is the low or suppressed position and is best used with a suppressor on the firearm. The last 3 o’clock position is the off position and allows your AR to fire without cycling the action. Huldra Mark IV 5.56 rifles and uppers are chambered using 5.56 chambers allowing you to shoot both 5.56 ammunition, as well as the lower pressured .233 with no problems. Huldra's Adams Arms Piston System uses the same gas port on the barrel to work the action of our inverted piston. Instead of directing the gases into the receiver, they go into a gas plug and drive rod sleeve. The gases are contained inside the drive rod sleeve and push the bolt carrier rearward using the gas pressure to cycle action. Once the action is cycled the remaining gases are pushed out of the front of the gas block, purging the system and keeping the gases out of the face of the user and the receiver. The end result is a firearm that functions and feels like an AR15 / M16 but burns cooler, cleaner, and is more reliable. The Huldra Mark IV has gone further than just a patented revolutionary operating system. The gas piston system and block are Melonited and the bolt carrier is ion bonded. All of the Piston System parts that operate this rifle come with a lifetime warranty. The Huldra melonited corrosive resistant CrMoV (Chrome-Moly-Vanadium) 4150 barrels provides excellent coating uniformity and no tolerance build up in the barrel to create deviation. Melonited barrels have higher lubricity, last longer and are just plain tougher than chrome lining. The barrel chambers are speed polished reducing resistance on the cartridge entering and exiting the chamber. The upper and lower receivers are machined from high quality mil-spec 7075-T6 aluminum forgings, with critical tooling dimensions held within ±.001" and Type III Hardcoat finished. The mil-spec buffer tube is precision machined from 7075-T6 aluminum as well. The magwell front features recessed chevrons for improved control.