Picked up a Sign Sauer M400 VTAC AR-15 in 5.56 NATO. Extremely nice rifle. The fit and finish is outstanding. The rail is a Viking Tactical, which is just a rebranded Troy Industies rail. It has the nicest soft rifle cases I've ever seen. It's the VTAC quick deployment case. The rifle also comes with the VTAC quick adjust sling. The slight has low profile from rail QD mount. The rifle has a stanless barrel and nice flash hider. It also has ambidextrous safety and magazine release. It has the BCM pistol grip and stock. Over all this rifle has many quality upgrades that most people want on a AR. It does not include any sights, not even flip up ones. All in all it's a great rifle that only needs sights added. I got this on trade and I am very happy with it .