Rifles, shotguns, and handguns differ mostly based on their: a. barrels and b. ammunition

Option:  a. barrels

Explanation:

Different types of guns are distinguish through the size of their barrels. A barrel is a long metal tube with hollow inside that allows bullets to pass when fired. Usually, large barrels allows bullets to hit the target more often without missing it. The shotguns use for hunting animals and often use to shoot small and fast-moving targets. Handguns also are known as pistols, which are smaller in size compared to the others.

the federal government of the united states was established by the constitution. us is a presidential republic. the president is head of state, head of government and of a two party legislative and electoral system. the supreme court balances the powers of the federal and the state government. yhe executive branch is headed by the oresident. there are two chambers of congress, the senate and the house of representatives. judicial power is exercised by the judicial branch (or judiciary), comprised of the supreme court and lower federal courts. the judiciary's function is to interpret the   constitution as well as the federal laws and regulations.