PumpHaus Autococker IBS Insert Barrel System 13" - Black
PumpHaus Designs brings to you the Insert Barrel System or "IBS" for our fellow pumpers using Autococker Threads. Taking cues from our popular Phantom Barrel, 15 degree reverse porting was used along with an internal muzzle break at the tip. 13" in length and anodized in gloss black. PumpHaus Designs...Simple Designs That Work.