The AR mod has just enough uniqueness to satisfy your aesthetic needs. The edgy look is created by six large vent holes on all four sides which incorporates style and functionality. It houses a 18650 battery and has a very low voltage drop due to it being completely copper. This mod also features a recessed button and there is no need to worry about the button spinning and coming undone due to the octagon shape locking it in place. Everything about this mechanical mod is unique and fun, which makes it a perfect fit in your collection or as one of your very first mods. The AR Mod has a smooth steel body that fits 18650 batteries. The rails look like a traditional AR-15 but they are smoothed out and are made to fit comfortably and nicely in your hand. This gives you a nice grip to fire the octagonal shaped bottom button. All the contact pins in the AR Mod are copper to allow for maximum connectivity. The AR Mod has knurled bottom cap and top cap designs to give the mod a rough looking design. There is a small chamber on the top cap that is measured at 22 mm to give a good flush look on all 22 mm RDA's (Rebuildable dripping atomizers). The top cap has 2 adjustable pins to fit either flat top and button top batteries. The AR Mod is made of all copper to ensure the lowest possible voltage drop and a nice, clean look.