This is a BLACKHAWK Belt Holster known as the CQC, model 410003BK-R.
Featuring their patented SERPA Auto-Lock(TM) technology" the SERPA CQC Concealment Holster delivers a smooth draw" easy re-holster and unparalleled handgun security in a sleek package that is perfect for concealed carry. Features a passive retention detent adjustment screw" and a speed-cut design for rapid draw" target acquisition and re-holstering.
Features:
Includes Belt Loop Platform and Paddle Platform
Fits Shoulder, S.T.R.I.K.E., Quick Disconnect and Tactical Holster Platforms
SERPA Auto Lock release
Right hand
Fits Colt Gov't 1911 and most clones with and without std rail