I owned the TCP738 for awhile-it was built broken. Unless the magazine is supposed to fall out with each shot, or jam every round. Lucky for me my gun store let me take it back and trade it for a Ruger LCR .38 and I could not be happier.
I would suggest looking at the return policy before buying ANY gun. Also try out various brands of ammo. My Springfield XD .45 ACP is picky about ammo-it likes the WWB and PDX rounds, but jams with every round of Hornady XTP.
My S&W 10-8 has an ejector rod that gets loose every so often and needs to be tightened manually before it will shoot.