This Open Top Multi-Fit Belt Holster is best fitted for 4" barrels flush, the BH2.4s is designed to accommodate the smaller carry versions of full frame firearms. It can also accommodate larger barrels with the additional visible out of its open-bottom design. Designed to be carried in FBI cant on the dominant side, the BH2.4s is a great open-carry holsters that can also be concealed using a longer shirt or jacket.