Lab Dosing Gun Filler 50 Milliliter Pistol Grip (1ml Incremental Shots)Heated Filling Gun 30 Day Limited Warranty The BVV Semi Automatic Lab Dosing Gun can is easily adjusted to fill in 1ml, 2ml, 3ml, 4ml, and 5ml increments. You can quickly and accurately fill your cartridges. The heated barrel has a digital controller that allows the user to set a temperature from (Room Temperature 190F) in increments of 1. 0F. The Filler comes ready to use, first clean the components, plug it in and attach the included 14 Gauge Tip.