When it comes to building your own rifle, there are a lot of different options to account for. How long do you want the barrel? What is your preferred caliber? Do you want to get a complete upper, or buy stripped components to work with? Each of your answers will greatly affect the finished product. If you decide you want a tactical-ready option that is built to perform, then you might start working with the PWS MK116 Piston 223 Rem / 5.56 NATO 16.1″ Complete Upper FSC.
Featuring a removable Triad 556 muzzle device, this option comes ready to attach a suppressor or just works as is with a reduced muzzle flash. The long stroke piston ensure a smoother cycling than traditional AR designs and the barrel is made in house at PWS to ensure the highest quality construction. This upper is made with MilSpec parts and comes ready to use with any MilSpec lower that you might have in mind.
If you want to build a combat-ready rifle that delivers superior accuracy, then this upper is a great one to consider.