HI HERE WE HAVE MY OLD BSA AIRSPORTER,, WELL IT HAS HAD A OX MAX ACCELERATER SQURED COIL SPRING BEEN FITTED, IT WAS VERY POWER FULL, DUE TO THE POWER ON THE OLD GIRL , I THINK THE BACK OV THE PISTON NUT HAS COME OFF IT DOSENT COCK NOW, TO BE HONISTED I NOT SURE WHAT WRONG WITH IT THAT WHY IT SPEARS OR REPAIRS IT IN GOOD CONDISTION IT IN 2.2 CHROME TRIGGER GAURD, I THINK THIS GUN COME OUT IN THE 60'S SO I VE BEEN TOLD THIS WILL MAKE A GOOD RESTORE PROJECT , ONLY NEED SLIGHT ATTENCTION,, IT A UNDER LEVER, THE SEIRAL NUMBER IS G106667 , ANY OFFERS OR MAY SWAP ,, THIS MAY BE A COLLECTORS ITEM OR