Stag Arms is committed to crafting the perfect AR-15 for all your needs, whether it's home defense or range use, and the gun comes with a host of upgrades that makes your rifle ready to run straight from the box. You've never had a rifle like this before, and what's great is that it's covered by Stag's incredible guarantees. Each Stag Arms Stag-15 Tactical is chambered in 5.56 NATO and features a 1:7-inch twist rate that'll take whatever you feed it and put those rounds exactly where you aim them. The rifle is also outfitted with a mid-length gas system that provides enough pressure for reliable cycling in harsh conditions while preventing excess wear and tear Mfg: Stag Arms