The Seekins Precision SP15 in .300 Blackout with 9-inch barrel is a billet-machined suppressor host pistol. Seekins' quality construction is applied to the short-barreled suppressor format, producing one of the most refined factory .300 BLK pistols available. The adjustable gas block allows tuning for both supersonic and subsonic loads. The SP15 billet lower accommodates a pistol brace. Type: Pistol Action: Semi-Automatic Caliber: .300 Blackout Capacity: 30 Year introduced: 2016, USA Weight: 58 oz Overall length: 21" Status: Active Intended use: Suppressor Host, Home Defense, Duty Use, PDW/Suppressed