If you consider the high quality of FWB pistols ( Model 65 and 80 both supposed to be capable of 1,000,000 shots!) perhaps the blocking of the recoil sledge will not be deleterious to the longevity of the pistol.

If you want to make things even more difficult, change the trigger weight to 1360 gms - this I believe, in combination with the recoiling effect, was to provide a cost effective way of practice for centre fire pistol disciplines.

ATB

Mike.