DSG and piston I pulled out of a gun I bought from someone. Not my work on the piston so don’t come at me. Have no need or desire for a DSG. Just want it gone at this point. For an extra $5 I’ll throw in the spring that was in there. No idea the brand or power but it’s really stiff and way too strong to put in any of my AEGs. I think when I tried putting the spring in my SR25 it chronoed like 3.49 J with a 0.40g BB (433 fps) so that’s as much as I can tell you about it. Piston appears to be an angel custom kratos with a krytac piston head Can go through hop up or other, it’s up to you. Feel free to ask me any questions and I will try to answer to the best of my ability