Silencer Adapter The outer barrel in APS guns usually has a 14 mm+ threaded finish in which we will be able to couple this adapter that allows us to use a threaded 14mm- silencer or carry it with the guard in "tacticool" mode.Extend Barrel Set We will not only find a silencer (AC018) for the guns, but we can also increase performance with a longer inner barrel (190mm) which runs inside the silencer. Adapt Rail Sight Dismantling the back sight we will be able to mount this rail to attach a specific red-coloured dot which has two white dots to aim with the sights in case we don't carry it on.Slide Cover Change the slide cover will have absolutely no effect on performance, but you will surely be carrying a different and more customised model than the rest of the players, thus gaining cool points!