The Airsoft Surgeon does magic with his Non-Hop Up Precision Inner Barrels for airsoft pistols in this RWTV video... "There has always arguments on whether tight bore or wide bore inner barrels help with power AND accuracy but they never seem to blend together. Tight bore guarantees power, wide bore helps with accuracy. Airsoft Surgeon has found a way to have a Precision Barrel set help with power AND accuracy. Watch this and you'll see why!"