SR-556-TD, 5.56 Semi-Auto, 16" barrel, Black. Comes with Take down bag & Mags.
The TD uses Ruger’s patented chrome-plated two-stage piston with a four-position gas regulator. The two-stage piston results in a cleaner, cooler-running firearm and delivers a smooth delivery stroke to the bolt carrier. The default position for the gas regulator is “2.”The barrel is hammer forged, chrome-lined with a length of 16.1 inches and chamber optimized for both .223 Remington and 5.56x45mm NATO. The carbine comes with a Ruger Mini-14 type flash hider, but other muzzle devices, including suppressors, may be used. The bolt is chrome-plated and the chrome-plated one-piece bolt carrier has an oversized and radiused rear bearing surface to reduce “bolt bounce.”The trigger installed and shipped with the TD is Ruger’s Elite 452™. This two-stage trigger is both smoother and lighter than the triggers found on most ARs. It uses a lightweight hammer that increases lock time by about 30%, and a full-power hammer spring to ensure ignition. Ruger literature states that the 452 trigger has a 4.5-pound pull, but using an RCBS trigger pull gauge, mine broke cleanly and crisply at 3.75 pounds.The TD ships with flip-up iron sights. The front is fully adjustable for both elevation and windage, while the rear sight is adjustable for windage.