Conservative Position
Conservatives believe that the 2nd amendment is here to stay. It is the cornerstone of the constitution. Once that right has been taken, there is no stopping the removal of the rights guaranteed in the 1st amendment. Conservatives believe that any able bodied mentally stable person has the right to own a fire arm. Many people have been saved by simply brandishing a weapon in the face of a criminal.
Conservatives believe that there are already plenty of laws on the books to stop criminals from getting guns, but the problem is that these laws need to enforced, and a more severe punishments need to bestowed upon those that violate those laws.
Liberals do not understand the significance of the 2nd amendment, why we have it, why it is second and why it is so important. In summary, the Revolutionary war was won because George Washington's army fought along side the men of the Militia (a band of gun owning home owners not part of the army). Without these militia we would have lost the war and still be under the rule of the queen. That is the "Why" it is in the constitution. It is second because the most important rights are in the 1st amendment (e.g., speech, religion, etc.) and without the 2nd amendment to protect those freedoms, those freedoms would be lost. In the 245+ years of our existence, no country has attacked us with an invasion because they know there are over 300 million civilians that are armed and can defend this country.
Conservatives believe that guns do not kill people but people kill people. If you take away the guns from honest hard working people, then only the criminals will have guns, which is recipe for higher crime rates.