I'm from England (the land where we can't be trusted with semi auto centrefires!), and I've had my ST-15 and conversion kit for nearly 2 years. Although my ST-15 is what is known as a straight pull (no gas port or tube) due to our laws, I still have a great time with it and when using the .22 kit (we can at least have .22LR in semi-auto) I still have a grin from ear to ear!
I'm ex regular British Army (5 years Royal Artillery, air defence), and still work for the Ministry of Defence in an armed role.
Couple of pics of my range toy;http://i978.photobucket.com/albums/ae26 ... CN2117.jpghttp://i978.photobucket.com/albums/ae26 ... CN2096.jpg
And as you guys don't see them too often, here's my duty rifle;http://i978.photobucket.com/albums/ae26 ... C01670.jpg