Daniel Defense is well known for making some of the best AR-15s in the industry, and the MK18 pistol or PDW from them is no exception. This compact and lightweight personal defense weapon weighs under six pounds. The 10.3 inch barrel is cold hammer forged for superior durability than many competing PDWs on the market. Meanwhile, the adjustable stock is overloaded and brings the overall length down to just 26.76 inches when it is collapsed. The barrel has more phosphate coating over it to help improve rust and corrosion resistant. Plain and simple, this is a PDW designed for a long service life, and it’s one that you’ll get many years of use out of before passing on down to future generations.