Not sure I entirely agree with Steve Lucas on this one. In this day age, when you can’t even carry certain size bottles of shampoo with you on a plane, you might want to rethink a guitar strap with bullets all over it:

The problem was that his Epiphone electric guitar, which is cased in a coffin-shaped case, was attached to a guitar strap decorated with empty bronze bullet cartridges.

The guitars passed through security and on to the plane, but when the captain was alerted that there was something in the cargo that resembled bullets, all of Lucas’ guitar cases were removed from the plane.

It’s not a question of free speech or whatever, it’s just that you’re making trouble for yourself. Seems like a no-brainer to avoid packing, you know, disarmed weaponry in your luggage.