This replacement barrel fits all models of the Steyr AUG, and will fit in any prior model from the A1 to the new AUG A3 M1. Choose either a 16" or 20" barrel with 1/2x28 American threads or 13x1 Metric threads with your choice of fore grip (Black, Green, Mud, White). This barrel comes with a 1:9 twist and either comes with a tulip-style flash hider for 13x1 or comes suppressor-ready for 1/2x28 (no flash hider included).
In California, it can ONLY be purchased for use with PRE BAN AUG A1, A2 AND USR.
Check local states laws if unsure before purchasing.