Your too polite Sam Vines ! 700 fps tops in .177 & 500-550 in .22 & thats with a little dieselling, Great gun, I have 2, for sale, One in in good condition & 2nd repaired stock & tap but still nice, but shoots OK with its square spring,
I was going to put a pic of them up & ask a valuation ( Anyone !! )
As an aside, I see a rear sight for a MK111 went on Fleabay for £35 + post, And a front sight is on there now,
I hope you take this in to account when you make a valuation, Thats £50 + post, just for the sights, ?
break the 2nd one, If enough intrest .
Cheers,