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
  • 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
  • Need something different? Talk to us about Vacu-Form shells to YOUR specifications! (subject to minimum purchase and lead time requirements)

Our goal is to make it easier to find the perfect holster when you Do It Yourself! Out of stock? No problem. Email today and we'll make it to order in 1-3 business days.


DISCLAIMER: “Sig”  and "Sig Sauer"is a federally registered trademark of Sig Sauer, Inc. and is one of many trademarks owned by Sig Sauer, Inc.  Neither DIY Holsters nor this site are affiliated in any manner with, or otherwise endorsed by, Sig Sauer.  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



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  • 5
    SIG vacu shell

    Posted by Bruce Swinton on 23rd Jul 2018

    Really saves me time and money to help grow my business

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