How does a gun randomly jump 80 fps. There are a few things that can increase fps fractionally but never heard of anything that can make it jump that much.
My mistake I didn't see the halo rifle. Your gun wasn't a crime against real steel
I thought it looked quite good and performed well too which is the most important thing.
Replace the end cap on the xcortech tracer with an aluminium disk as soon as you can. The plastic clip on one that is fitted is useless, mine got shot off the first time I used it.