Tippmann A5 - B5 Revamp

I am a B5 owner, but haven't been able to play with it for ages, cos it keeps failing. I really like bullpups, so I wanted to do my own. Here's an idea that works for me, change the (really) old sear mechanism to the post-2011 one, modify the lower to be able to use it and make it look good enough to play.

All parts printed in PETG but the buttstock that is TPU

https://www.youtube.com/watch?v=rrY1YduE8nA