Fixed Retention Vacu-Formed Sig Sauer IWB Holster Shells

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The Next Generation of holster manufacturing is here! Available for the Sig 320 full size or compact 320 models (sub compact not available).

Save time and money with the new DIY "Vacu-Form" Series Holster Shells. Initially available for the most popular Smith & Wesson ® pistols in an IWB configuration.

  • In stock now
  • Black Boltaron (other colors and patterns available on request with a minimal lead time subject to minimum quantities-please email for more information)
  • Holes sized to fit a wide variety of mounting options (Quick Clips, FOMI's, Tough Clips, PHLster Tuckstruts, ModWings, Raven Eidolon Claws and Struts and much more
  • Left hand models coming soon!
  • Need something different? Talk to us about Vacu-Form shells to YOUR specifications! (subject to minimum purchase and lead time requirements)

 Each Vacu-formed holster shell includes a 1.75" Quick Clip for belt mounting (does not include hardware).


Our goal is to make it easier to find the perfect holster when you Do It Yourself!


DISCLAIMER: “Sig”  and "Sig Sauer"is a federally registered trademark of Sig Sauer, Inc. and is one of many trademarks owned by Smith & Wesson, Inc.  Neither DIY Holsters nor this site are affiliated in any manner with, or otherwise endorsed by, Sig Sauer (Smith and Wesson).  The use of “Sig” or "Sig Sauer"  on this page is merely to advertise the sale of Sig Sauer pistols, parts, or components.  For genuine Sig Sauer products and parts visit