Not many weaknesses but may chop on full auto but rarely.
This is a good setup. If you have a Tippmann A-5. It Fires FAST!!! I really suggest you get this feature. It is really helpfull when you are playing. You can shoot faster with all the same accuracy. So it's worth it. Great Upgrade. I Have no problems with it so far. all except slight chop on the auto. but thats the cool part because its fast!!!!
Get IT Its Worth it if you want your tippmann for the long run.