The Springfield Armory Saint Edge ATC (Accuracy Tuned Carbine) is Springfield's competition-focused AR-15 with a Melonite-treated 18-inch stainless barrel, Accu-Tite tension system for a tighter receiver fit, and a two-stage match trigger. Springfield Armory manufactures in Geneseo, Illinois. Type: Rifle Action: Semi-Automatic Caliber: 5.56x45mm NATO Capacity: 30 Year introduced: 2019, USA Weight: 99 oz Overall length: 37.5" Status: Active Intended use: competition, sporting, precision