Bought the TS Orange block for my TS Orange. Fits perfectly. It replaced my old thumb-screw block, and is easier to remove/install than the old style.

This magnetic holster insert fits spot on
Well pleased

Just recently purchased my 3rd block for my CZ TS Orange. Fit is excellent as usual.

The magnetic block fit like a glove. Draws are very smooth . A couple of fellow shooter were so impressed with it that they are ordering up the holster and block.
Rob

Straight replacement for my 1911 block simple to fit - as I live in the UK I had to adapt it slightly for my Taurus Long barreled revolver ( yes, it's a monstrosity but it's the closest we can get) this involved a slight changing of shape of the retention block with a bit of sandpaper. I must stress that I knew I would have to do this for my particular pistol as it is not the one specified, this was not the fault of the supplied part but a choice I felt comfortable making. The service from Double Alpha was excellent as always, swift and correct.

I recently purchased the Race Master Insert Block Assembly for my CZ Tactical Sport. I emailed your company to make sure it would fit in correctly in the block. Your reply was prompt and insightful. Upon receiving the block, I had to do a little bit of filing to make the gun fit ( you sent me a video link on how to properly fit the block). It works amazing... Thanks for a great product and most of all outstanding customer service!!!!!!!!! I am a customer for life!!!!