Boffy

I got the L96 but play CQB, can't wait to get into some woodlands to use it. Only got problems with the hop-up at the moment but I'm hoping to change it. Anyone recommend any sites that equip upgrades for the L96, perhaps even sites that carry out the upgrades (or do you think I should do it myself?). Finally, how do the silencers fit on the barrel? How will it effect range/accuracy? I'm not entirely sure how they affect the guns in airsoft as its only my second weapon