Corhampton, Hampshire, UK

DAA Flex Holster Insert Block

£ 50.00 50.0 GBP £ 50.00

£ 50.00

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DAA Flex Holster Insert block

This insert design allows each user to adjust and fine-tune their insert block to perfectly fit a particular pistol. Not only does this allow support for almost all gun types with just two models of inserts (Type-A and Type-B), but it enable users to adjust for the small variances that are often introduced by the gun manufacturers who don’t consider the external dimensions of the trigger guard to be critical. This has always been an issue for the Alpha-X inserts, a problem now solved with the new Flex insert design. Now, using the adjustable slide-lock teeth, the selection of side spacers and Shims, and possibly the front spacer, each shooter can achieve a perfect fit to his or her pistol. 

The Flex Insert Block Assembly features an  aluminium slide-lock mounted with user adjustable slide-lock teeth. The new stainless-steel safely level is wider and flatter than that found in the Alpha-X blocks and is mounted on the right side of the block, the outside of the holster for all RH shooters.  This makes it more accessible and easier to activate.

The new injection molding production process, and rail mounted magnetic support wedge, ensure the slide lock is more stable and moves more consistently than ever.

For more information and videos on set up CLICK HERE

A-type and B-type Long Pistol Compatibility 


  • All 1911's
  • Phoenix Trinity
  • SIG P320 - all models
  • SIG P320X5 - all models
  • GLOCK - all models 
  • Walther PPQ Q5
  • Springfield XDM - all models
  • SIG X-5 
  • SIG 226/228 of all models
  • Tanfoglio Standard
  • Sphinx SDP
  • Sphinx 3000
  • Walther PPQ Q5 SF 


  • CZ - All steel frame pistols
  • CZ P09
  • Canik TP9FS
  • Phoenix red back
  • Beretta 
  • Grand Power
  • S&W M&P
  • Tanfoglio - all Square trigger guards

The Flex Insert Block Includes 

  • A fully assembled insert block, including an aluminum slide lock with adjustable retention teeth and stainless safety lever
  • 7 side spacers in increments of 1.25mm
  • A pack of 12 side-Shims, of approx. 0.12mm thickness 
  • A 2mm front spacer (used only for some gun types)
  • Two M4x8 screws for securing the insert assembly to the holster body
  • Two 2mmx6 self-tapping screws for mounting the front spacer
  • Two 4mmx5 self-tapping screws for mounting the THIN side spacer (use these short screws only for the thinnest 2.5mm side spacer)
  • Two 4mmx8 self-tapping screws for mounting the side spacers (use for all side spacers other than the thinnest 2.5mm one)

Shipping Methods

Collection/On-Site Service
Collect your order from our premises in Hampshire or a Blue RPC club shoot. Have a chat with us and a browse whilst you're here!

Royal Mail/Parcel Force 24
Despatched same working day if ordered before 15:00, with next day delivery aim.

International Shipping
Despatched same working day if ordered before 15:00 GMT. Our website automatically detects what country you are in, so if it lets you order it then we can ship there!

​Firearms and Ammunition
See the
RFD Transfer and Club Collection page for more details.