I have made my own holsters for over 40 years.
I open carry, so I'm not concerned with concealing my Sigma.
The pdf file is too large to post here, due to the pictures. So it's on my wife's web site.
Click on the link to the .pdf file with pictures and instructions on how to make a retention holster. http://jewelryart.org/PDF/Retention_holster.pdf
I tested this, with my neighbor trying to pull the pistol from the holster, while he was behind me. He almost jerked me off my feet, but never got the gun out of the holster.
I open carry, so I'm not concerned with concealing my Sigma.
The pdf file is too large to post here, due to the pictures. So it's on my wife's web site.
Click on the link to the .pdf file with pictures and instructions on how to make a retention holster. http://jewelryart.org/PDF/Retention_holster.pdf
I tested this, with my neighbor trying to pull the pistol from the holster, while he was behind me. He almost jerked me off my feet, but never got the gun out of the holster.