Built to the highest specification by expert gunsmiths and featuring industry-leading innovative technology the LANTAC LA-N15 RAVEN Rifle is like no other AR-style firearm available.Its massive specification out of the box means that you won't have to upgrade a thing and it comes complete with Radian ambidextrous controls Magpul furniture and our CMC-made ECT-1 trigger.Incorporatingover 11Patents both granted and pendingthe LA-N15 rifle represents the cutting edge of AR development.RAVEN Barrels aremanufactured to the highest level of accuracy during the machining process and on to the final product. We guarantee Sub MOA with high-quality factory ammunition.Each barrel is chambered & head spaced to a master bolt face with barrel extensions being individually matched toeach barrel. Barrel blanks are precision gun drilled double reamed precision honed and then rifledwith a progressive button system utilizing 6 groove rifling that has been proven to produce the highest level of shooting accuracy. Barrels are then air guaged with a bore concentricity tolerance between .00005 to .0001.After double stress releaving our barrels are Cryogenically treated before final finishing.