Str8airsoft

My spring wasn’t beat but looked cheaper than what I replaced it with. Like your replacement mine was about an inch and a half longer and much darker color as well. I bought mine in June, this is the old spring.

Yes I’m in Tennessee, US. Here they regulate indoor maximum 400fps under 1.5 jz. Semi only no minimum engagement however outdoors can regulate different engagements with caps of 450 depending on the weapon class.

I really do appreciate this forum for open talk and sharing experiences to others as it’s helped me with my build. I have only had this two months and I don’t want to play with anything else. I generally play in CQB environments so low FPS doesn’t really cause an issue however I have had a reduction of FPS and I didn’t know why. When I bought the gun it chrono’d at 350-360 FPS w .20. After a few months and about 40k rounds it started to drop into the 320 range. My local shop tech suggested compression upgrades to stabilize the FPS. I am in the process now. My first upgrade was a 120% spring. It chrono’d at 465/1.77 jz w .20. Let’s just say our field outlawd me and back to the shop I went. I swapped for a 110% spring (quick and easy spring change system) and chrono’d at 392-395 @ 1.4 jz w .20. I plan on mastermod cylinder set and piston. Max HOPUP but can’t find the right bucking to start with. What have you all used and had best results from?