I did a TDC mod on the rifle, bored out the piston to accept vsr springs. I dont remember the fps, but can chrono. It launches .4s out to 70 yards easily. If I remember correctly, I debridged the barrel and it's running a 70 degree Mapleleaf bucking. It shoots nice, but its collecting dust since I bought a SRS. Price includes shipping. No swaps please, I'm not interested. It also has a slip over suppressor with scotchbrite baffles. It is very quiet. I believe I have 3 mags aswell.