Not trying to advertise or anything, I don't work for these guys, but if you go to
www.AlpineTactical.com They give 10% off kettlebell orders.
The kettlebells are literally the best on the market. Made of steel instead of iron and they're all the same size (meaning you don't have to adjust form when you change the weight of the kettlebell). The bells they're discounting can been viewed at
www.performbetter.com under "competition kettlebells".
*Another note on kettlebell training is that the "Hard Style" taught by dragon door is pretty much a beginner "style"(I use the term "style" very loosely as there is no style in kettlebell training, its either the right way or the wrong way).
The techniques taught in kettlebell sport are more applicable to military fitness. By this statement, I mean that in kettlebell sport they teach strength-endurance as a staple. Staying as relaxed and calm as possible to put forth maximum strength output for long periods of time.
An example of why dragon door and the "high tension" taught is not the best way to train for military application is this: When you ruck, would you squeeze your glutes and tighten your leg muscles while walking? Of course not, you would wear yourself out in no time flat. However; if you stay relaxed you can endure much longer... THIS is the principle of kettlebell sport type of training idealology, and its very effective for endurance and gaining massive amounts of strength.
I was stuck at 5-7 reps with a 24kg kettlebell for the longest time (about a year), until I started applying kettlebell sport techniques. Just from doing kettlebell jerks for 1 minute sets, my presses increased to 15 in just 3 weeks!
Cool thing is that jerks actually help with pushup numbers for the PT test as well.
So basically my rant is about training to be task oriented.