An exact copy of a MK-219 bomb tail fuse, standard in WW2 Navy GP bombs.
The body is solid CNC machined aluminum and the vanes are laser cut aluminum.
This replica nose fuze is free rotating. Its designated use is for Navy bombs:
• MK-4 100 lb. G.P.
• MK-5 30 lb. Fragmentation
• MK-12 500 lb. G.P.
• MK-13 1000 lb. G.P.
• MK-9 L.C. Demolition 500 lb.
• MK-9 L.C. Demolition 1000 lb.
• MK-42 100 lb Chemical
• all types of depth bombs

Fun Facts
Functioning. . . . . . Instantaneous
Armed condition. . . .When striker flange has risen more than .31 in. from outer sleep, and arming wire is gone.
Fuses used with. . . .MK 223 in G.P. bombs, or MK’s 224, 234, 229 or AN-MK 230 in depth bombs
Arming time. . . . . .170 vane revolutions
Vane span. . . . . . .4.75” (4 vanes)
Max body diameter. .2.75”
Overall length. . . . .5.5” (With Booster)
General: This fuse uses the “rotor system” of arming, and the operation of this system is the same ia all the fuses that use it:AN-MK 219, MK-221, MK-223, AN-MK 228. This fuse will function on impact with the water or denser medium, providing it has been dropped from a sufficient altitude to arm.
Operation: There are two stages of arming. During the first stage, the upper gear is free to rotate and the lower gear is held stationary. During the second stage, the lower is free to rotate and the upper gear is held stationary.