I've found a .177 barrel in mint condition. They said it is an LG110 Match Rifle barrel. They also said this is the made of old Steyr barrel supplier. This means nothing to me since I don't know the current one. It has a 3 digit number on it, which also reported as the last 3 digits of the serial number of the rifle, I don't know. Which brand do you you think it is? Rifling of the barrel is quite obvious, twist rate seems lower than my other gun's barrels. To shoot pellets in high velocities might cause me cleaning quite more often. But if it gives the accuracy similar to .22 no problem at all. I want velocities around 800-900fps .177. But accuracy is the most important issue ofcoarse, if it gives better accuracy at lower velocities...I'll accept that I hope I can fit it easily... ofcourse I'll watch barrel swap videos of Steyr again first.