Re: AMT 380 backup
I do not know why people seem to think a hammer means anything.
A 1911 has a hammer but is single action.
Smiths MP has no hammer but is double.
And many have no hammers that are single.
As per the OP question , the AMT 380 was made in both single and double action.
The first ones were single , then later came the double action ones.
A single action trigger will not cock the the firing pin , a double action cocks then releases the firing pin with one pull of the trigger.
What does your gun do?
That'll answer the question.