The REC7 combines the familiar ergonomics of the AR style rifle with a revolutionary short stroke gas piston operating system to create a rifle that runs cleaner and more reliably than traditional designs. - Unlike direct impingement firearms that release gas into the upper receiver the REC7 piston vents excess gas forward at its patented chrome-lined fluted gas block resulting in cleaner cooler lower-maintenance operation. The black nitride coated gas block features two positions for suppressed or unsuppressed shooting ensuring reliability of the shot and helping to avoid unnecessary wear from over speeding the action. It also allows the user to access the piston assembly for maintenance via the front of the rifle without requiring removal of the hand guard or barrel. - The one-piece 17-4 stainless piston interfaces with a strike face that has been machined into the monolithic anti-tilt bolt carrier. - Reengineered and reinforced for piston applications the TB-41 DLC coated anti-tilt full auto bolt carrier is machined from a solid block of 8620 steel with an integrated piston strike face. It