I wouldn't even call them variants. To me they're all Jack Hammers (Jack Hammer, SFM-1, and Axe Hammer). I would call the Jack Hammer a SJTAC variant, though.

Last edited by Spider-Pig; 06/02/14 10:22 AM.

USMC 1997-2002. 6173 CH-53D Sea Stallion Helicopter Crew Chief and Flightline Mechanic. Semper Fi!

"Be still, Taggart!"