Firepower

[Oralee]

Pronounced [fya] [powa]
The quality of having built or swole arms. Arms (or specifically biceps) are sometimes known as guns so to have strong/muscular ones equates to having firepower.
As heard in [Night at the Museum] 2.

[Justin Bieber]

The destructive capacity of guns, missiles, or a military force (used with reference to the number and size of guns available)

[Mary Mallozziberg]

the number and size of guns that a military group has available: