Raiding on bases is done using Breaching Charges or Heavy Breaching Charges,

Raiding only is available on "gates" with C4

Or Eco-raiding, read the rules to see what this means

You need:

1 Breaching Charge or 1 Heavy Breaching Charge T1 gate (wood)

1 Heavy Breaching Charge or 2 Breaching Charge T2 gate (metal)

2 Heavy Breaching Charges or 4 Breaching Charge T3 gate (concrete)