Sorry for noticing this at such a late date, Drew Cameron.
If you need any further assistance in deciphering the animations please do not hesitate to contact me directly.
I do not know if you have already implemented sch a feature but for smoothest animation playback, you should add some basic motion blending. FPSC has this and there is a good probability that some of the animation segments are slightly miss-matched because it is easy to overlook such errors when motion blending is in play.
As a shameless plug, there are numerous other weapons which match the hand mesh and general style and are available on the game creator store; should you need additional weapons for your project. The animation style is a bit different though, regarding the walk cycles. However, some DBP developers prefer to omit the walking animation all together and handle the movement with code.
Best of luck to you and thanks for buying