Seekins Precision SP15 chambered in 6.5 Grendel with 18-inch stainless steel match barrel. The 6.5 Grendel provides long-range ballistic capability beyond the range ceiling of 5.56 NATO from the AR-15 platform, using a dedicated bolt and 6.5mm barrel. Type: Rifle Action: Semi-Automatic Caliber: 6.5 Grendel Capacity: 26 Year introduced: 2016, USA Weight: 108 oz Overall length: 37" Status: Active Intended use: Precision Shooting, Competition, Long Range