[MasterGunner01]

The US Navy SEALs use 9mm Sig Sauer pistols becase the Sig does not wear out after three years from the 8,00 to 9,000 rounds per year, per gun, shot by SEAL operators. The SEALs wanted the M45 MEUSOC, but the USN forced the Sig on them. The Sigs are holding up well. SEALs have use of the HK USP .45 pistol as the Mk 23 Mod 0, however the Mk 23 is much larger and heavier.

[AmericanSamurai]

I read where one SEAL team shot more ammo than the entire U.S. Marine Corps, still, I am partial to my Force Recon(now MARSOC) Marines. :P