The Seekins Precision SP15 18-inch precision rifle is a purpose-built long-range AR-15 with a stainless steel heavy-profile barrel chambered in .223 Wylde. The rifle-length gas system and adjustable gas block provide the smoothest possible operating cycle. Seekins' billet receivers and MCSR free-float handguard make this a competitive precision rifle platform for varmint hunters and precision rifle competitors. Type: Rifle Action: Semi-Automatic Caliber: 5.56x45mm NATO Capacity: 30 Year introduced: 2014, USA Weight: 72 oz Overall length: 36.5" Status: Active Intended use: Precision Rifle, Varmint Hunting, Long-Range Shooting