My 15T is setup with Heavy Bolt, H2 buffer, and Blue Springco spring, and doesn't like wolf/tulla steelcase at all. I think I posted before I got so frustrated with it I gave 30 rounds away to a guy at the range, and just sold off a couple hundred rounds to a buddy...

Stock carbine buffer and spring, etc it probably would work fine, but I have mine setup specifically for XM193 as that is what I shoot and stockpile. I may try some of the Wolf Golf 223 (loaded to XM193 specs per the description? - JaPes you may know if that is correct?) if I can find some - if that works well it would be another source of decent ammo. .

Wolf Gold Specs
.223 Rem (M193) 55 gr Copper FMJ Boxer 3250 fps