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.