I snagged this nice, lightly used, single stack 4013 on GunBroker back in March. Shortly there after, the hunt for a good holster began. I wasn't going to be satisfied sticking in a holster made for another gun. After a few weeks of research comparing prices, wait times, etc, I settled on a Striker IWB from UBG Holsters. I ordered the reinforced model in mahogany.

The holster arrived in approximately 8 weeks and within the quoted wait time. It is very well made and of a quality equal to that of other gun leather I have from makers like Milt Sparks, TT Gunleather and El Paso Saddlery. This holster is offered for the 4013 (obviously) and similar sized 3rd Gens built on the .45 single stack frame. It is also available for the 3913 and similar models.