They are a good starter for the $$. They are,, Spanish made imports and have been coming over under various names since the early 70's, but the basic rifle has changed little. The early guns where frowned upon because of the split/2 peice stock but have proven to be good shooters in the right hands.
There are several things that can be done to make the "out of box" gun shoot better.
1st; They are put together quickly to save money, so a little time doing some easy "finish" fitting gones along way, this is just basically cleaning up wood chips and burrs around most of the inletting.
2nd; The lock mechinism while having a strong spring, is composed of stamped parts that usually have sharp edges that grind a bit on each other, and a full disassemble and polishing of all lock componants does wonders to bring the lock to it's full speed.
3rd; The barrel type breech is problematic unless kept really clean,,this is the case with all Percussion breech plug type fire channels, but the right angles in this one needs to be clean-clean all the time.