I got home and checked it and I was mistaken. Got confused with an issue which is unique to my Slugslinger and mistakenly generalized it (old man memory ). My Slugslinger has rusted screws with the heads worn off acting as immovable pins.
However my warning still stands, the plastic is of that glossy type which has shown bad reactions to H2O2 on other toys and the targetmasters have shown to have faded colors as a result. I am happy to try to clear up your junkers but there is a considerable risk of damage involved so you know.