Hard to tell from the picture which spring it is, hit Dale up on facebook he will happily send you some springs out..top nitch service from this bloke. I prefer the softer spring for small mags 7 and a stiffer spring for bigger mags 11 + and also for lining. little to no give for shading , mid give for lining, volts between 6.5 and 9.5 depending on the job in hand . did this today 7rl and 11 cm and springersCapturepreece.JPG It is an awesome tool