The PSA PA-15 with nitride-treated barrel is one of the best-selling AR-15 rifles in the United States. Nitride barrel treatment provides corrosion resistance comparable to chrome lining at a lower manufacturing cost, allowing PSA to pass the savings to consumers. The carbine-length gas system, 6-position stock, and standard mil-spec lower make this an ideal first AR or truck gun. Type: Rifle Action: Semi-Automatic Caliber: 5.56x45mm NATO Capacity: 30 Year introduced: 2016, USA Weight: 62 oz Overall length: 32.5" Status: Active Intended use: Home Defense, Target Shooting, First AR