Your firearm is your main responsibility. What this means is that you should make sure
that no repairs are needed or notify the proper authorities if you suspect that your firearm could be unsafe. You must do all you can to prevent failures in handling and performance. You can become more skilled at handling and maintaining your weapons if you know a bit more about gun modification.
Sometimes, performance failure is not due to your lack of skill alone.
It’s not safe to assume that your abilities are the one to blame for a misfire, you must have your firearm checked thoroughly. Even if a firearm is top quality, these are still manufactured goods that may have defects. Look at all parts and check for cracks. In particular, the chamber area must be checked. Check for proper timing particularly if you’re making use of fully automatic firearms and revolvers. Malfunctions are not exclusively the duty of the manufacturer. You as a pistol owner should routinely check for defects, especially when it comes to the proper safety mechanisms.