The Premier Series MgMicro Lite ultralight magnesium micro chassis provides a foundation for stability and accuracy. Featuring a CURE carbon barrel; smoke carbon fiber buttstock w/adjustable cheek rest, limb-saver recoil pad and M-LOK slots; grip blends comfort with style in an ambidextrous, flat-top AR design; ATOM Magnesium modular rifle chassis designed for the firearms enthusiast or backcountry hunters seeking a compact ultralight chassis. The ATOM features the same built-in bubble level and machined in RRS 1.5" dovetail (Arca-Swiss) in the forend as the Element 4.0 Magnesium.