Mine was an ICS Sig 551. Bought it new 5 months ago, it's still stock. I've gamed it a couple dozen times now and have put 10k+ rounds through it with no issues. Solid gun and only 6 lbs it shoots quite straight and has a good ROF on a 9.6 stick. Mags are the only real issue with this gun as it takes proprietary mags which can be hard to find. Good news though is TM and MAG brand mags will work well with a quick and easy mod.