Jet/rockets fins are a Great fin and one that I still use however Fins are a personal choice, just like masks no two are a like. I suggest you try out as many as you can. I know in my shop I have demo Fins and highly encourage divers / skin divers to take a few types to the pool and see what they like better. Remember trying fins in a pool isn’t as good as actually diving the fins in currents and such but it will help you make a more informed decision about what fin is right for you.
As per the .45, The Marine Corps is still issuing them for certain Special Operation units. Force Recon gets the MEU/SOC 45, (A basic 1911 with a ton of modifications) and DET 1 "MAR SOC" had Kimber make a 1911 to fit their needs. Kimber release a similar one for the public a few years later called the “desert warrior”. I own a few handguns back in the states, and have fired most of the popular brands; my preference is still the 1911. But just like Fins it’s a personal choice, the single well magazine just fits in my hand better.
As per the .45, The Marine Corps is still issuing them for certain Special Operation units. Force Recon gets the MEU/SOC 45, (A basic 1911 with a ton of modifications) and DET 1 "MAR SOC" had Kimber make a 1911 to fit their needs. Kimber release a similar one for the public a few years later called the “desert warrior”. I own a few handguns back in the states, and have fired most of the popular brands; my preference is still the 1911. But just like Fins it’s a personal choice, the single well magazine just fits in my hand better.