This blowback operated pdw shares all the same controls as a conventional ar-type platform, and accepts the widely available glock extended magazine.It comes equipped with a 7 mlok handguard for the installation of fore-grips, lights and lasers.In addition, the ar-19 pdw features magpul mbus flip up sights, an armalite tac 9mm brake, and two buffer tube collar attachment points for a sling.This model has a 16" barrel and a mid-length gas system with an adjustable gas block.Action: Semi-AutoCaliber: 9mm LugerBarrel Length: 16"Capacity: 33+1Trigger: Two-Stage PrecisionSafety: AmbidextrousOal: 33.30"- 36.60"Weight: 7 lbsStock Description: Adjustable Magpul STR CollapsibleMuzzle: Flash HiderReceiver Material: 7075-T6 AluminumSights: Magpul MBUS Front & RearBarrel Description: Chrome Moly Vanadium Chrome-LinedTwist: 1:10"Barrel Length Range: 16" to 16.99"Weight Range: 7 lbs to 7.99 lbsHand: RightStock Finish Group: BlackMetal Finish Group: Blued/Black