A lightweight ambidextrous holster for off-duty or plain-clothes use. It conceals Glock pistols beneath a coat or jacket. A special trigger guard retention device secures the pistol in the holster. The holster will accommodate belt widths from 1.25 inches to 2.48 inches. The SM fits 9x19, .40 and .357 (G17, G19, G26, G34, G22, G23, G27, G35, G31, G32, G31) and the LG fits G20, G29, G21, G30 (except for the G36) and .45 G.A.P. caliber GLOCKs pistols.