Just a caution to those of you thinking about buying a SAM Thunderbolt for competition. After an exasperating search it appears that there is no holster currently available that will fit this model of gun. I tried a Blackhawk holster that was supposed to work with railed 1911s and it didn't even come close. Tried a Fobus Evolution Roto holster that is supposed to fit railed 1911s - gun wouldn't go in that one either. On the advice of a CGN member I tried Solely Canadian. While they have plans to maybe produce it in the future (possibly the fall) they currently don't make one either.
The only potential workable suggestion that I got from a helpful member (thank P E) was to take a heat gun to a Blade-Tech 1911 rail holster, warm it up and use the gun to move the Kydex forward. He did get it to work but you'll have to be careful or you could end up with $100 pile of melted plastic.
This isn't a knock on the gun as it appears to be well made & nicely finished like the SAM pistols typically are. However, if you're thinking about buying one of these to use in holster type competitions, unless you're willing to draw the gun out of your pocket you're going to be very disappointed.