I'm looking for one to carry my LCP and preferably a spare mag, this seems ideal. Does anyone have one of these?

https://www.galls.com/tru-spec...-carry-holster-shirt

https://www.undertechundercove...nt-crew-neck-t-shirt

I realize we're not talking a draw and fire in .00001 seconds, but that's OK.

I've got a couple of the second one, the undertech, used it a few times and found it was too hot for Arizona except in the winter.

I don’t remember the brand, but I tried one of the “Holster Tshirts” back when they first hit the market.
I’m cold natured, and I thought they were too hot. Mainly because all of the holster part is right where you also radiate the most heat, armpits and sides of the ribs.
It held a G19 just fine. I even carried my P229 once, but that was the outside edge of its envelope, IMO.

But main thing was the doubled fabrics and Velcro closures under the arm pits made it feel really bulky and it trapped a lot of heat.

5.11 tactical hides small-mid sized pistol very well. Wearing the unit with a regular shirt, tucked in, makes the gun disappear. On the downside with a buttoned shirt it is slow to get at. Wearing a sweater instead of a shirt makes access quicker but still a slow process. Ideal for when the gun must invisible but slow on the draw.

Thanks for the speedy relies, I ended up going with 5-11, they offer free shipping for over $35:

https://www.511tactical.com/holster-shirt.html

I have a couple of the 5.11 shirts and they work for my PPS. With the v-neck they disappear.

511 shirt is now $29.49:

https://www.511tactical.com/ho...eh=cae6f60f608c107b1

Neither looks that comfortable, to me. I'm guessing you have a particular reason for one?

What about one of those bicycling shirts and a P3AT/LCP?