A M1911 pistol and G3 rifle were discovered when Gardaí they stopped the car at around 10am.
Three young men are due in court following a guns and ammunition seizure in Kildare.
Gardaí are investigating if the seizure is linked to the darknet.
On Saturday, gardai stopped a car in Kildare as part of an intelligence led operation.
They found a handgun, a rifle and 40 rounds of ammunition.
A M1911 pistol and G3 rifle were discovered when Gardaí they stopped the car at around 10am.
Three young men - aged 19, 20 and 21 - were arrested and questioned over the weekend.
They have now been charged and are due before Naas District Court this morning.
Gardaí are investigating if the weapons had been bought online via the darknet.
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